Migrate to Rollup with new ESM target and UMD Worker injection

.escheckrc

@@ -0,0 +1,7 @@
+{
+  "ecmaVersion": "es5",
+  "modules": "false",
+  "files": [
+    "./dist/**/*.js"
+  ]
+}

.eslintrc.js

@@ -20,7 +20,6 @@ module.exports = {
   // see https://github.com/standard/eslint-config-standard
   // 'prettier' (https://github.com/prettier/eslint-config-prettier) must be last
   extends: ['eslint:recommended', 'prettier'],
-  ignorePatterns: ['/src/demux/webworkify-webpack.js'],
   parser: '@typescript-eslint/parser',
   parserOptions: {
     sourceType: 'module',

.gitignore

@@ -22,6 +22,7 @@ coverage/
 /cloudflare-pages
 /api-docs
 /api-docs-markdown
+/karma-temp
 
 # eslint
 .eslintcache

.prettierignore

@@ -5,5 +5,4 @@
 /demo/libs
 /dist
 /lib
-/src/demux/webworkify-webpack.js
 package-lock.json

README.md

@@ -19,7 +19,7 @@ HLS.js works directly on top of a standard HTML`<video>` element.
 
 HLS.js is written in [ECMAScript6] (`*.js`) and [TypeScript] (`*.ts`) (strongly typed superset of ES6), and transpiled in ECMAScript5 using [Babel](https://babeljs.io/) and the [TypeScript compiler].
 
-[Webpack] is used to build the distro bundle and serve the local development environment.
+[Rollup] is used to build the distro bundle and serve the local development environment.
 
 [html5 video]: https://www.html5rocks.com/en/tutorials/video/basics/
 [mediasource extensions]: https://w3c.github.io/media-source/
@@ -28,7 +28,7 @@ HLS.js is written in [ECMAScript6] (`*.js`) and [TypeScript] (`*.ts`) (strongly
 [ecmascript6]: https://github.com/ericdouglas/ES6-Learning#articles--tutorials
 [typescript]: https://www.typescriptlang.org/
 [typescript compiler]: https://www.typescriptlang.org/docs/handbook/compiler-options.html
-[webpack]: https://webpack.js.org/
+[rollup]: https://rollupjs.org/
 
 ## Features
 
@@ -177,7 +177,7 @@ Only debug-mode artifacts:
 npm run build:debug
 ```
 
-Build and watch (customized dev setups where you'll want to host through another server than webpacks' - for example in a sub-module/project)
+Build and watch (customized dev setups where you'll want to host through another server - for example in a sub-module/project)
 
 ```
 npm run build:watch

api-extractor/report/hls.js.api.md

@@ -1610,6 +1610,7 @@ export interface HlsChunkPerformanceTiming extends HlsPerformanceTiming {
 export type HlsConfig = {
     debug: boolean | ILogger;
     enableWorker: boolean;
+    workerPath: null | string;
     enableSoftwareAES: boolean;
     minAutoBitrate: number;
     ignoreDevicePixelRatio: boolean;