Source: lib/polyfill/all.js

  1. /*! @license
  2.  * Shaka Player
  3.  * Copyright 2016 Google LLC
  4.  * SPDX-License-Identifier: Apache-2.0
  5.  */
  7. goog.provide('shaka.polyfill');
  9. goog.require('shaka.log');
  12. /**
  13.  * @summary A one-stop installer for all polyfills.
  14.  * @see http://enwp.org/polyfill
  15.  * @export
  16.  */
  17. shaka.polyfill = class {
  18.   /**
  19.    * Install all polyfills.
  20.    * @export
  21.    */
  22.   static installAll() {
  23.     for (const polyfill of shaka.polyfill.polyfills_) {
  24.       try {
  25.         polyfill.callback();
  26.       } catch (error) {
  27.         shaka.log.alwaysWarn('Error installing polyfill!', error);
  28.       }
  29.     }
  30.   }
  32.   /**
  33.    * Registers a new polyfill to be installed.
  34.    *
  35.    * @param {function()} polyfill
  36.    * @param {number=} priority An optional number priority.  Higher priorities
  37.    *   will be executed before lower priority ones.  Default is 0.
  38.    * @export
  39.    */
  40.   static register(polyfill, priority) {
  41.     const newItem = {priority: priority || 0, callback: polyfill};
  42.     for (let i = 0; i < shaka.polyfill.polyfills_.length; i++) {
  43.       const item = shaka.polyfill.polyfills_[i];
  44.       if (item.priority < newItem.priority) {
  45.         shaka.polyfill.polyfills_.splice(i, 0, newItem);
  46.         return;
  47.       }
  48.     }
  49.     shaka.polyfill.polyfills_.push(newItem);
  50.   }
  51. };
  54. /**
  55.  * Contains the polyfills that will be installed.
  56.  * @private {!Array<{priority: number, callback: function()}>}
  57.  */
  58. shaka.polyfill.polyfills_ = [];