@dominicstop/utils/src/helpers/PromiseHelpers.ts

Yet another event emitter written in typescript.

/** wrapper for timeout that returns a promise */
export function timeout(ms: number) {
  return new Promise<void>(resolve => {
    const timeoutID = setTimeout(() => {
      clearTimeout(timeoutID);
      resolve();
    }, ms);
  });
};

/** Wraps a promise that will reject if not not resolved in <ms> milliseconds */
export function promiseWithTimeout<T>(ms: number, promise: Promise<T>){
  // Create a promise that rejects in <ms> milliseconds
  const timeoutPromise = new Promise<T>((_, reject) => {
    const timeoutID = setTimeout(() => {
      clearTimeout(timeoutID);
      reject(`Promise timed out in ${ms} ms.`)
    }, ms);
  });

  // Returns a race between our timeout and the passed in promise
  return Promise.race([promise, timeoutPromise]);
};