Noissue - Don't import JavaScript modules into the global scope (includes removing unused module).

lib/main.js

 /*
  * This Source Code is subject to the terms of the Mozilla Public License
  * version 2.0 (the "License"). You can obtain a copy of the License at
  * http://mozilla.org/MPL/2.0/.
  */
 
 "use strict";
 
 /**
  * @module main
  */
 
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/Promise.jsm");
+const {Services} = Cu.import("resource://gre/modules/Services.jsm", {});
+const {XPCOMUtils} = Cu.import("resource://gre/modules/XPCOMUtils.jsm", {});
+const {Promise} = Cu.import("resource://gre/modules/Promise.jsm", {});
 
 require("commandLine");
 let {run} = require("crawler");
 
 let baseURL = null;
 
 /**
  * Waits for the application to initialize.
  * @type {Promise}
  */
@@ skipping 59 matching lines @@
 
 /**
  * Called if requesting parameters failed.
  *
  * @param {Event} event
  */
 function onParametersFailed(event)
 {
   Cu.reportError("Failed loading parameters");
 }