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19 lines
509 B
TypeScript
19 lines
509 B
TypeScript
import { deferred } from "./deferred.ts";
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export class DeadlineError extends Error {
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constructor() {
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super("Deadline");
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this.name = "DeadlineError";
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}
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}
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/**
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* Create a promise which will be rejected with DeadlineError when a given delay is exceeded.
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*/
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export function deadline<T>(p: Promise<T>, delay: number): Promise<T> {
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const d = deferred<never>();
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const t = setTimeout(() => d.reject(new DeadlineError()), delay);
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p.finally(() => clearTimeout(t));
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return Promise.race([p, d]);
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}
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