fix(types): Add has|usingPlugin to typedef by adding stubs which are removed from builds (#8811)

## Description
tsc doesn't understand mixins and ignores jsdoc not followed by code.
The jsdoc for the plugin methods `usingPlugin()` and `hasPlugin()` in
Player are being ignored. To get them included in type outputs we need
to have otherwise unnecessary stubs codes, as we already have for `on()`
etc, which adds unnecessary, even if a small amount of, code to the
outputs.

## Specific Changes proposed
* Slight refactor of Player to include those stubs.
* Adds a rollup plugin to delete lines between certain comments, so
those stubs are deleted from the outputs.
* Applies those comments to the `on()` etc stubs in Component and the
new plugin stubs in Player.

Any code surrounded by these comments, and the comments themselves, is
deleted from the dist and test builds:

```js
/* start-delete-from-build */
  console.log('hi');
/* start-delete-from-build */
```

Compared to main, video.min.js is 53 bytes smaller.

## Requirements Checklist
- [ ] Feature implemented / Bug fixed
- [ ] If necessary, more likely in a feature request than a bug fix
- [ ] Change has been verified in an actual browser (Chrome, Firefox,
IE)
  - [ ] Unit Tests updated or fixed
  - [ ] Docs/guides updated
- [ ] Example created ([starter template on
JSBin](https://codepen.io/gkatsev/pen/GwZegv?editors=1000#0))
- [ ] Has no DOM changes which impact accessiblilty or trigger warnings
(e.g. Chrome issues tab)
  - [ ] Has no changes to JSDoc which cause `npm run docs:api` to error
- [ ] Reviewed by Two Core Contributors

build/rollup-exclude-lines.js

@@ -0,0 +1,41 @@
+/**
+ * Remove parts of files from outputs. Everything between a pair of `/* start-delete-from-build *\u002f`
+ * and `/* end-delete-from-build *\u002f` comments
+ *
+ * Based on https://github.com/se-panfilov/rollup-plugin-strip-code
+ */
+
+import { createFilter } from '@rollup/pluginutils';
+
+const START_COMMENT = 'start-delete-from-build';
+const END_COMMENT = 'end-delete-from-build';
+
+/**
+ * Remove lines of code surrounded by comments
+ *
+ * @param {Object} [options] Options
+ * @param {string} [options.include] Files to inlcude
+ * @param {string} [options.exclude] Files to exclude
+ * @param {string} [options.startComment] Starting keywork, default start-delete-from-build
+ * @param {string} [options.endComment] Eding keywork, default end-delete-from-build
+ * @param {RegExp} [options.pattern] Custom regex
+ * @return void
+ */
+export default function excludeLines(options = {}) {
+  // assume that the myPlugin accepts options of `options.include` and `options.exclude`
+  const filter = createFilter(options.include, options.exclude);
+
+  return {
+    transform(code, id) {
+      if (!filter(id)) {
+        return;
+      }
+
+      const startComment = options.startComment || START_COMMENT;
+      const endComment = options.endComment || END_COMMENT;
+      const defaultPattern = new RegExp(`([\\t ]*\\/\\* ?${startComment} ?\\*\\/)[\\s\\S]*?(\\/\\* ?${endComment} ?\\*\\/[\\t ]*\\n?)`, 'g');
+
+      return code.replace(options.pattern || defaultPattern, '');
+    }
+  };
+}

package.json

@@ -104,6 +104,7 @@
     "@babel/preset-env": "^7.9.0",
     "@rollup/plugin-image": "^3.0.2",
     "@rollup/plugin-replace": "^2.4.1",
+    "@rollup/pluginutils": "^5.1.0",
     "@types/node": "^18.8.3",
     "access-sniff": "^3.2.0",
     "autoprefixer": "^10.2.5",

rollup.config.js

@@ -17,6 +17,7 @@ import image from '@rollup/plugin-image';
 import istanbul from 'rollup-plugin-istanbul';
 import externalGlobals from 'rollup-plugin-external-globals';
 import svg from 'rollup-plugin-svg';
+import excludeLines from './build/rollup-exclude-lines';
 
 const excludeCoverage = [
   'test/**',
@@ -143,6 +144,9 @@ export default cliargs => [
     },
     external: externals.browser,
     plugins: [
+      excludeLines({
+        include: 'src/js/**'
+      }),
       alias({
         'video.js': path.resolve(__dirname, './src/js/video.js')
       }),
@@ -169,6 +173,9 @@ export default cliargs => [
     },
     external: externals.browser,
     plugins: [
+      excludeLines({
+        include: 'src/js/**'
+      }),
       alias({
         'video.js': path.resolve(__dirname, './src/js/video.js')
       }),
@@ -193,6 +200,9 @@ export default cliargs => [
     },
     external: externals.test,
     plugins: [
+      excludeLines({
+        include: 'src/js/**'
+      }),
       multiEntry({exports: false}),
       alias({
         'video.js': path.resolve(__dirname, './src/js/video.js')
@@ -228,6 +238,9 @@ export default cliargs => [
     ],
     external: externals.module,
     plugins: [
+      excludeLines({
+        include: 'src/js/**'
+      }),
       alias({
         'video.js': path.resolve(__dirname, './src/js/video.js'),
         'videojs-contrib-quality-levels': path.resolve(__dirname, './node_modules/videojs-contrib-quality-levels/dist/videojs-contrib-quality-levels.es.js'),
@@ -260,6 +273,9 @@ export default cliargs => [
     external: externals.browser,
     plugins: [
       primedIgnore,
+      excludeLines({
+        include: 'src/js/**'
+      }),
       alias({
         'video.js': path.resolve(__dirname, './src/js/video.js')
       }),
@@ -292,6 +308,9 @@ export default cliargs => [
     ],
     external: externals.module,
     plugins: [
+      excludeLines({
+        include: 'src/js/**'
+      }),
       json(),
       primedBabel,
       svg(),
@@ -313,6 +332,9 @@ export default cliargs => [
     external: externals.browser,
     plugins: [
       primedResolve,
+      excludeLines({
+        include: 'src/js/**'
+      }),
       json(),
       primedExternalGlobals,
       primedCjs,
@@ -337,6 +359,9 @@ export default cliargs => [
     plugins: [
       primedIgnore,
       primedResolve,
+      excludeLines({
+        include: 'src/js/**'
+      }),
       json(),
       primedExternalGlobals,
       primedCjs,

src/js/component.js

@@ -151,7 +151,9 @@ class Component {
    * @param {Function} fn
    *        The function to call with `EventTarget`s
    */
+  /* start-delete-from-build */
   on(type, fn) {}
+  /* end-delete-from-build */
 
   /**
    * Removes an `event listener` for a specific event from an instance of `EventTarget`.
@@ -164,7 +166,9 @@ class Component {
    * @param {Function} [fn]
    *        The function to remove. If not specified, all listeners managed by Video.js will be removed.
    */
+  /* start-delete-from-build */
   off(type, fn) {}
+  /* end-delete-from-build */
 
   /**
    * This function will add an `event listener` that gets triggered only once. After the
@@ -177,7 +181,9 @@ class Component {
    * @param {Function} fn
    *        The function to be called once for each event name.
    */
+  /* start-delete-from-build */
   one(type, fn) {}
+  /* end-delete-from-build */
 
   /**
    * This function will add an `event listener` that gets triggered only once and is
@@ -191,7 +197,9 @@ class Component {
    * @param {Function} fn
    *        The function to be called once for each event name.
    */
+  /* start-delete-from-build */
   any(type, fn) {}
+  /* end-delete-from-build */
 
   /**
    * This function causes an event to happen. This will then cause any `event listeners`
@@ -212,7 +220,9 @@ class Component {
    * @param {Object} [hash]
    *        Optionally extra argument to pass through to an event listener
    */
+  /* start-delete-from-build */
   trigger(event, hash) {}
+  /* end-delete-from-build */
 
   /**
    * Dispose of the `Component` and all child components.

src/js/player.js

@@ -5323,6 +5323,44 @@ class Player extends Component {
     */
     this.trigger('playbackrateschange');
   }
+
+  /**
+   * Reports whether or not a player has a plugin available.
+   *
+   * This does not report whether or not the plugin has ever been initialized
+   * on this player. For that, [usingPlugin]{@link Player#usingPlugin}.
+   *
+   * @method hasPlugin
+   * @param  {string}  name
+   *         The name of a plugin.
+   *
+   * @return {boolean}
+   *         Whether or not this player has the requested plugin available.
+   */
+  /* start-delete-from-build */
+  hasPlugin(name) {
+    return false;
+  }
+  /* end-delete-from-build */
+
+  /**
+   * Reports whether or not a player is using a plugin by name.
+   *
+   * For basic plugins, this only reports whether the plugin has _ever_ been
+   * initialized on this player.
+   *
+   * @method Player#usingPlugin
+   * @param  {string} name
+   *         The name of a plugin.
+   *
+   * @return {boolean}
+   *         Whether or not this player is using the requested plugin.
+   */
+  /* start-delete-from-build */
+  usingPlugin(name) {
+    return false;
+  }
+  /* end-delete-from-build */
 }
 
 /**
@@ -5525,33 +5563,5 @@ TECH_EVENTS_RETRIGGER.forEach(function(event) {
  * @type {Event}
  */
 
-/**
- * Reports whether or not a player has a plugin available.
- *
- * This does not report whether or not the plugin has ever been initialized
- * on this player. For that, [usingPlugin]{@link Player#usingPlugin}.
- *
- * @method Player#hasPlugin
- * @param  {string}  name
- *         The name of a plugin.
- *
- * @return {boolean}
- *         Whether or not this player has the requested plugin available.
- */
-
-/**
- * Reports whether or not a player is using a plugin by name.
- *
- * For basic plugins, this only reports whether the plugin has _ever_ been
- * initialized on this player.
- *
- * @method Player#usingPlugin
- * @param  {string} name
- *         The name of a plugin.
- *
- * @return {boolean}
- *         Whether or not this player is using the requested plugin.
- */
-
 Component.registerComponent('Player', Player);
 export default Player;