react-native/local-cli/link/promiseWaterfall.js

24 lines
593 B
JavaScript

/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* 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(),
);
};