42 lines
1.4 KiB
JavaScript
42 lines
1.4 KiB
JavaScript
"use strict";
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/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.mapAsyncSequential = mapAsyncSequential;
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exports.findAsyncSequential = findAsyncSequential;
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/**
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* `Array#map` for async operations where order matters.
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* @param array The array to traverse.
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* @param action An async action to be performed on every array item. Will be
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* awaited before working on the next.
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* @returns The list of results returned from every `action(item)`
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*/
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async function mapAsyncSequential(array, action) {
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const results = [];
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for (const t of array) {
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const result = await action(t);
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results.push(result);
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}
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return results;
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}
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/**
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* `Array#find` for async operations where order matters.
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* @param array The array to traverse.
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* @param predicate An async predicate to be called on every array item. Should
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* return a boolean indicating whether the currently element should be returned.
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* @returns The function immediately returns the first item on which `predicate`
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* returns `true`, or `undefined` if none matches the predicate.
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*/
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async function findAsyncSequential(array, predicate) {
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for (const t of array) {
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if (await predicate(t)) {
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return t;
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}
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}
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return undefined;
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}
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//# sourceMappingURL=jsUtils.js.map
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