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/* 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, components: { ID: parseUUID } } = require('chrome');
const { generateUUID } = Cc['@mozilla.org/uuid-generator;1'].
                          getService(Ci.nsIUUIDGenerator);

// Returns `uuid`. If `id` is passed then it's parsed to `uuid` and returned
// if not then new one is generated.
exports.uuid = function uuid(id) id ? parseUUID(id) : generateUUID()