Issue 4795 - Use modern JavaScript syntax

lib/url.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
  * 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/>.
  */
 
 /** @module url */
 
 "use strict";
 
-let {getDomain} = require("tldjs");
-let punycode = require("punycode");
+const {getDomain} = require("tldjs");
+const punycode = require("punycode");
 
 let getDecodedHostname =
 /**
  * Gets the IDN-decoded hostname from a URL object.
  *
  * @param {URL} url
  * @return {string}
  * @static
  */
 exports.getDecodedHostname = url =>
@@ skipping 76 matching lines @@
   documentHost = documentHost.replace(/\.+$/, "");
 
   if (requestHost == documentHost)
     return false;
 
   if (!isDomain(requestHost) || !isDomain(documentHost))
     return true;
 
   return getDomain(requestHost) != getDomain(documentHost);
 };