27 lines
628 B
JavaScript
27 lines
628 B
JavaScript
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//@ts-check
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/// <reference path="./deferredPromise.d.ts"/>
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/**
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* Returns a promise that can be resolved externally.
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* @template {any} DeferredPromiseType
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* @returns {DeferredPromise<DeferredPromiseType>}
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*/
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export const deferredPromise = () => {
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/** @type {(value: DeferredPromiseType) => void} */
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let resolve
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/** @type {(reason?: any) => void} */
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let reject;
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/**
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* @type {Promise<DeferredPromiseType>}
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*/
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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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// @ts-ignore
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return Object.assign(promise, {resolve, reject});
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}
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export default DeferredPromise
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