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"

 };

 let usingJSON = false;

 let hash = {}, bestMatchingLocale = null;

 try {

   let data = require("@l10n/data");

   hash = data.hash;

   bestMatchingLocale = data.bestMatchingLocale;

   usingJSON = true;

 }

 catch(e) {}

 exports.usingJSON = usingJSON;

 // Returns the translation for a given key, if available.

 exports.get = function get(k) {

   return k in hash ? hash[k] : null;

 }

 // Returns the full length locale code: ja-JP-mac, en-US or fr

 exports.locale = function locale() {

   return bestMatchingLocale;

 }

 // Returns the short locale code: ja, en, fr

 exports.language = function language() {

   return bestMatchingLocale ? bestMatchingLocale.split("-")[0].toLowerCase()

                             : null;

 }