es-promise-ext/dist/prototype/delay/delay.js

Native promise extensions for javascript and typescript.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.default = delay;
/**
 * Delay between the promise chain.
 *
 * @return {Function<T>}
 * A value which pass through within a promise
 *
 * @example
 * Promise.resolve(3)
 *   .then(delay(300))
 *   .then(doSomething)
 * // return 3 in a promise after delay 300 ms
 */
function delay(millisecond) {
    if (!Number.isInteger(millisecond) || millisecond < 0)
        throw TypeError('Promise.prototype.delay parameter 1 must be a positive integer');
    return (value) => new Promise(resolve => {
        setTimeout(() => resolve(value), millisecond);
    });
}