Proposal: Bluebird.propsRace

[knoid]

I'd find it useful to have an easy way to know which promise "won the race". A simple usage example would be to show the loading spinner only when the request took more than X milliseconds.

const { stillWaiting } = await Bluebird.propsRace({
  request: api.get('/something'),
  stillWaiting: Bluebird.delay(200, true),
});
if (stillWaiting) {
  showLoading();
}

A possible implementation could be:

Bluebird.raceProps = function raceProps(props) {
  const raceArray = Object.entries(props)
    .map(([key, resolvable]) => Bluebird.resolve(resolvable).then(
      (value) => ({ [key]: value }),
    ));
  return Bluebird.race(raceArray);
}