tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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head.js (936B)

      1 /* This Source Code Form is subject to the terms of the Mozilla Public
      2 * License, v. 2.0. If a copy of the MPL was not distributed with this
      3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      4 
      5 "use strict";
      6 
      7 /**
      8 * Creates a new Taskbar Tab within the registry, and asserts that it does not
      9 * already exist.
     10 *
     11 * (This function is also in xpcshell/head.js.)
     12 *
     13 * @param {TaskbarTabsRegistry|TaskbarTabs} aRegistry
     14 *   The registry to create the taskbar tab in.
     15 * @param {...*} args
     16 *   Arguments to findOrCreateTaskbarTab.
     17 * @returns {TaskbarTab}
     18 *   The newly-created taskbar tab.
     19 */
     20 function createTaskbarTab(aRegistry, ...args) {
     21  let result = aRegistry.findOrCreateTaskbarTab(...args);
     22  function check({ taskbarTab, created }) {
     23    Assert.ok(created, "Created taskbar tab did not exist before");
     24    return taskbarTab;
     25  }
     26 
     27  if (result.then) {
     28    return result.then(check);
     29  }
     30 
     31  return check(result);
     32 }