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1/**
2 * @license
3 * Copyright (c) 2016 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/// <reference types="node" />
15import File = require('vinyl');
16import { AsyncTransformStream } from './streams';
17export declare function forkStream(stream: NodeJS.ReadableStream): NodeJS.ReadableStream;
18/**
19 * Forks a stream of Vinyl files, cloning each file before emitting on the fork.
20 */
21export declare class ForkedVinylStream extends AsyncTransformStream<File, File> {
22 constructor();
23 protected _transformIter(files: AsyncIterable<File>): AsyncIterable<File>;
24}