Le Viet
46 lines
822 B
JavaScript
46 lines
822 B
JavaScript
"use strict";
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const { TimeoutError } = require("./TimeoutError");
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class Deferred {
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constructor() {
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this._timeout = null;
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this._promise = new Promise((resolve, reject) => {
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this._reject = reject;
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this._resolve = resolve;
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});
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}
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registerTimeout(timeoutInMillis, callback) {
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if (this._timeout) return;
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this._timeout = setTimeout(() => {
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callback();
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this.reject(new TimeoutError("Operation timeout"));
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}, timeoutInMillis);
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}
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_clearTimeout() {
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if (!this._timeout) return;
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clearTimeout(this._timeout);
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this._timeout = null;
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}
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resolve(value) {
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this._clearTimeout();
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this._resolve(value);
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}
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reject(error) {
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this._clearTimeout();
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this._reject(error);
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}
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promise() {
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return this._promise;
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}
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}
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module.exports = Deferred;
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