ramda-adjunct/src/internal/polyfills/Promise.allSettled.js

Ramda Adjunct is the most popular and most comprehensive set of utilities for use with Ramda, providing a variety of useful, well tested functions with excellent documentation.

import { map } from 'ramda';

import allP from '../../allP';
import resolveP from '../../resolveP';

const onFulfill = value => ({ status: 'fulfilled', value });
const onReject = reason => ({ status: 'rejected', reason });

const allSettledPolyfill = iterable => {
  const array = map(
    p =>
      resolveP(p)
        .then(onFulfill)
        .catch(onReject),
    [...iterable]
  );

  return allP(array);
};

export default allSettledPolyfill;