Promise.allSettled

Wait for all promises to settle, whether they resolve or reject.

Code

General

const promises = [
  Promise.resolve(1),
  Promise.resolve(2),
  Promise.reject(new Error('fail'))
];

const results = await Promise.allSettled(promises);

const fulfilled = results
  .filter(r => r.status === 'fulfilled')
  .map(r => r.value);

const rejected = results
  .filter(r => r.status === 'rejected')
  .map(r => r.reason);

return `fulfilled: ${fulfilled.length}, rejected: ${rejected.length}`;

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