race-promise.ts

/**
 * Rejects any promise after the specified amount of time (in ms). Useful for
 * timing out long-running operations that didn't resolve in time.
 * @param promise Promise to race against.
 * @param timeout Time in ms to wait until rejecting the promise unless it
 * resolved in time.
 * @return A new promise that either behaves like the original promise or
 * rejects after the specified amount of time.
 */
export const racePromise = async <T>(promise: Promise<T>, timeout: number) => {
  let timeoutId: number;
  return Promise.race([
    promise,
    new Promise<T>((_, reject) => {
      timeoutId = window.setTimeout(reject, timeout);
    }),
  ]).finally(() => {
    clearTimeout(timeoutId);
  });
};