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1/**
2 * @license
3 * Copyright (c) 2018 The Polymer Project Authors. All rights reserved.
4 * This code may only be used under the BSD style license found at
5 * http://polymer.github.io/LICENSE.txt
6 * The complete set of authors may be found at
7 * http://polymer.github.io/AUTHORS.txt
8 * The complete set of contributors may be found at
9 * http://polymer.github.io/CONTRIBUTORS.txt
10 * Code distributed by Google as part of the polymer project is also
11 * subject to an additional IP rights grant found at
12 * http://polymer.github.io/PATENTS.txt
13 */
14/**
15 * Registers an extension that extends the global `Mocha` implementation
16 * with new helper methods. These helper methods will be added to the `window`
17 * when tests run for both BDD and TDD interfaces.
18 */
19export declare function extendInterfaces(helperName: string, helperFactory: (context: {}, teardown: (cb: () => void) => void, interfaceName: 'tdd' | 'bdd') => void): void;
20/**
21 * Applies any registered interface extensions. The extensions will be applied
22 * as many times as this function is called, so don't call it more than once.
23 */
24export declare function applyExtensions(): void;