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": "unstable"

 };

 const { Cc, Ci } = require("chrome");

 const runtime = Cc["@mozilla.org/xre/app-info;1"].getService(Ci.nsIXULRuntime);

 exports.inSafeMode = runtime.inSafeMode;

 exports.OS = runtime.OS;

 exports.processType = runtime.processType;

 exports.widgetToolkit = runtime.widgetToolkit;

 // Attempt to access `XPCOMABI` may throw exception, in which case exported

 // `XPCOMABI` will be set to `null`.

 // https://mxr.mozilla.org/mozilla-central/source/toolkit/xre/nsAppRunner.cpp#732

 try {

   exports.XPCOMABI = runtime.XPCOMABI;

 }

 catch (error) {

   exports.XPCOMABI = null;

 }