Issue 6741 - Use ES2015 classes in lib/synchronizer.js

lib/synchronizer.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 22 matching lines @@
 
 const INITIAL_DELAY = 1 * MILLIS_IN_MINUTE;
 const CHECK_INTERVAL = 1 * MILLIS_IN_HOUR;
 const DEFAULT_EXPIRATION_INTERVAL = 5 * MILLIS_IN_DAY;
 
 /**
  * Downloads filter subscriptions whenever necessary.
  */
 class Synchronizer
 {
+  /**
+   * @hideconstructor
+   */
   constructor()
   {
     /**
      * The object providing actual downloading functionality.
      * @type {Downloader}
      */
     this._downloader = new Downloader(this._getDownloadables.bind(this),
                                       INITIAL_DELAY, CHECK_INTERVAL);
     onShutdown.add(() =>
     {
@@ skipping 283 matching lines @@
 }
 
 /**
  * This object is responsible for downloading filter subscriptions whenever
  * necessary.
  * @type {Synchronizer}
  */
 let synchronizer = new Synchronizer();
 
 exports.Synchronizer = synchronizer;