timed-promise.ts

class TimedPromise<T> extends Promise<T> {
  constructor(
    executor: (resolve: (value: T | PromiseLike<T>) => void, reject: (reason?: unknown) => void) => void,
    ms: number,
    onTimeout?: () => void
  ) {
    super((resolve, reject) => {
      const timeout = setTimeout(() => {
        clearTimeout(timeout);

        if (onTimeout) {
          onTimeout();
        }

        reject('Promise has timed out.');
      }, ms);

      return executor(
        (resolve) => { clearTimeout(timeout); return resolve; },
        (reject) => { clearTimeout(timeout); return reject; }
      );
    });
  }
}