Promise wrapper with abort function

promise-with-abort.js

function makeAbortablePromise(promise, abort = () => {}) {
  const promiseWithAbort = {
    abort,
    promise,
    // proxy methods
    then: (...args) => {
      promiseWithAbort.promise = promiseWithAbort.promise.then.apply(
        promiseWithAbort.promise,
        args
      );
      return promiseWithAbort;
    },
    catch: (...args) => {
      promiseWithAbort.promise = promiseWithAbort.promise.catch.apply(
        promiseWithAbort.promise,
        args
      );
      return promiseWithAbort;
    },
    finally: (...args) => {
      promiseWithAbort.promise = promiseWithAbort.promise.finally.apply(
        promiseWithAbort.promise,
        args
      );
      return promiseWithAbort;
    }
  };
  return promiseWithAbort;
}


// test it out...
const { abort, promise } = makeAbortablePromise(Promise.resolve(123), () => console.log('aborted'))
  .then(x => x + 1)
  .then(x => x + 1, () => console.log("test"))
  .then(console.log) // -> 125
  .catch(console.error);

abort(); // -> 'aborted'