Use classic Web worker.

src/WW.js

@@ -18,8 +18,7 @@ export class WW extends Observable {
 
     this.#ident = name;
     this.#ww = new Worker(
-      new URL(path, import.meta.url),
-      { type: 'module' }
+      new URL(path, import.meta.url)
     );
   }
 

src/encGroup.js

 
-import { assert } from './utils.js';
+import { assert, sleep } from './utils.js';
 import { WWGroup } from './WWGroup.js';
 import { WW } from './WW.js';
 import { Channel } from './channel.js';

tests/WWGroup.spec.js

-
 import { sleep } from '../src/utils.js';
 import { H264EncWWGroup } from '../src/encGroup.js';
 import { Obervable, Observable } from 'rxjs';
@@ -189,12 +188,12 @@ describe("Channel Spec", () => {
 
 describe("H264EncWWGroup Spec", () => {
   it("Instantiation", async () => {
-    let wg = new H264EncWWGroup("h264enc", { numOfWW: 3 });
+    let wg = new H264EncWWGroup("h264enc", { numOfWW: 2 });
     await wg.start();
 
     await sleep(1000);
 
-    expect(wg.numOfWorker()).toBe(3);
+    expect(wg.numOfWorker()).toBe(2);
 
   });
 

webpack.tdd.conf.js

@@ -2,7 +2,7 @@ const path = require('path');
 const webpack = require("webpack");
 
 module.exports = {
-  entry: './tests/specs.js',
+  entry: './specs.js',
   mode: 'development',
   output: {
     filename: 'spec_bundle.js',
@@ -16,9 +16,6 @@ module.exports = {
         exclude: /node_modules/,
         use: ['babel-loader']
       },
-      {
-
-      }
     ]
   },
   plugins: [