The Tor Browser / file revision

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 'use strict';

 module.metadata = {

   'stability': 'stable',

   'engines': {

     'Firefox': '*',

     'Fennec': '*'

   }

 };

 const { isBrowser } = require('./window/utils');

 const { modelFor } = require('./model/core');

 const { viewFor } = require('./view/core');

 if (require('./system/xul-app').is('Fennec')) {

   module.exports = require('./windows/fennec');

 }

 else {

   module.exports = require('./windows/firefox');

 }

 const browsers = module.exports.browserWindows;

 //

 modelFor.when(isBrowser, view => {

   for (let model of browsers) {

     if (viewFor(model) === view)

       return model;

   }

   return null;

 });