react-native/local-cli/link/promiseWaterfall.js
Héctor Ramos 1151c096da Update copyright headers to yearless format
Summary: This change drops the year from the copyright headers and the LICENSE file.

Reviewed By: yungsters

Differential Revision: D9727774

fbshipit-source-id: df4fc1e4390733fe774b1a160dd41b4a3d83302a
2018-09-11 15:33:07 -07:00

24 lines
599 B
JavaScript

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
*/
/**
* Given an array of promise creators, executes them in a sequence.
*
* If any of the promises in the chain fails, all subsequent promises
* will be skipped
*
* Returns the value last promise from a sequence resolved
*/
module.exports = function promiseWaterfall(tasks) {
return tasks.reduce(
(prevTaskPromise, task) => prevTaskPromise.then(task),
Promise.resolve(),
);
};