Issue 6447 - Switch to Harmony modules in lib/*

lib/elemHide.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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 "use strict";
 
 /**
  * @fileOverview Element hiding implementation.
  */
 
-const {ElemHideException} = require("./filterClasses");
-const {FilterNotifier} = require("./filterNotifier");
+import {ElemHideException} from "./filterClasses";
+import {FilterNotifier} from "./filterNotifier";
 
 /**
  * Lookup table, filters by their associated key
  * @type {Object}
  */
 let filterByKey = [];
 
 /**
  * Lookup table, keys of the filters by filter
  * @type {Map.<Filter,string>}
@@ skipping 41 matching lines @@
 /**
  * Lookup table, lists of element hiding exceptions by selector
  * @type {Object}
  */
 let exceptions = Object.create(null);
 
 /**
  * Container for element hiding filters
  * @class
  */
-let ElemHide = exports.ElemHide = {
+export let ElemHide = {
   /**
    * Removes all known filters
    */
   clear()
   {
     filterByKey = [];
     keyByFilter = new Map();
     filtersByDomain = new Map();
     filterKeyBySelector = Object.create(null);
     unconditionalSelectors = unconditionalFilterKeys = null;
@@ skipping 283 matching lines @@
 
       let nextDot = currentDomain.indexOf(".");
       currentDomain = nextDot == -1 ? "" : currentDomain.substr(nextDot + 1);
     }
 
     if (provideFilterKeys)
       return [selectors, filterKeys];
     return selectors;
   }
 };