47 lines
1.6 KiB
JavaScript
47 lines
1.6 KiB
JavaScript
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/*
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Copyright 2019 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// @flow
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// Returns a promise which resolves with a given value after the given number of ms
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export const sleep = (ms: number, value: any): Promise => new Promise((resolve => { setTimeout(resolve, ms, value); }));
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// Returns a promise which resolves when the input promise resolves with its value
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// or when the timeout of ms is reached with the value of given timeoutValue
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export async function timeout(promise: Promise, timeoutValue: any, ms: number): Promise {
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const timeoutPromise = new Promise((resolve) => {
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const timeoutId = setTimeout(resolve, ms, timeoutValue);
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promise.then(() => {
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clearTimeout(timeoutId);
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});
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});
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return Promise.race([promise, timeoutPromise]);
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}
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// Returns a Deferred
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export function defer(): {resolve: () => {}, reject: () => {}, promise: Promise} {
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let resolve;
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let reject;
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const promise = new Promise((_resolve, _reject) => {
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resolve = _resolve;
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reject = _reject;
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});
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return {resolve, reject, promise};
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}
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