Issue 6482 - Use ES6 classes

lib/compat.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 68 matching lines @@
     "Services",
     {
       obs: {
         addObserver() {},
         removeObserver() {}
       }
     }
   ]
 ]);
 
-function FakeTimer()
+class FakeTimer
 {
-}
-FakeTimer.prototype =
-{
-  delay: 0,

[Manish Jethani, 2018/03/15 07:54:10]

These are being assigned in the constructor (always) so there's no need for them
to live on the prototype.

-  callback: null,
   initWithCallback(callback, delay)
   {
     this.callback = callback;
     this.delay = delay;
     this.scheduleTimeout();
-  },
+  }
+
   scheduleTimeout()
   {
     window.setTimeout(() =>
     {
       try
       {
         this.callback();
       }
       catch (e)
       {
         Cu.reportError(e);
       }
       this.scheduleTimeout();
     }, this.delay);
   }
-};
+}
 
 //
 // Add a channel property to XMLHttpRequest, Synchronizer needs it
 //
 
 XMLHttpRequest.prototype.channel = {
   status: -1,
   loadFlags: 0,
   INHIBIT_CACHING: 0,
   VALIDATE_ALWAYS: 0
 };