Issue 4878 - Start using ESLint for adblockpluscore

test/filterNotifier.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 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 73 matching lines @@
   compareListeners(test, "removeListener(listener1)", [listener2]);
 
   FilterNotifier.removeListener(listener2);
   compareListeners(test, "removeListener(listener2)", []);
 
   test.done();
 };
 
 exports.testRemovingListenersWhileBeingCalled = function(test)
 {
-  let listener1 = function()
+  let listener1 = function(...args)
   {
-    listeners[0].apply(this, arguments);
+    listeners[0](...args);
     FilterNotifier.removeListener(listener1);
   };
   let listener2 = listeners[1];
   FilterNotifier.addListener(listener1);
   FilterNotifier.addListener(listener2);
 
   compareListeners(test, "Initial call", [listener1, listener2]);
   compareListeners(test, "Subsequent calls", [listener2]);
 
   test.done();
 };