test

index.html

@@ -171,6 +171,12 @@
 
         <script type="text/javascript" src="js/helpers.js"></script>
         <script type='text/javascript'>
+            document.addEventListener("DOMContentLoaded", () => {
+                //check is shared array buffer is supported
+                if (!window.SharedArrayBuffer) {
+                    document.querySelector("#warning").style.display = "block";
+                }
+            });
             // web audio context
             var context = null;