Fault-tolerant Promise.all

fault-tolerant-promise-all.js

const p1 = new Promise(resolve => resolve({ data: 1, status: 'OK' }));
const p2 = new Promise((resolve, reject) => reject({ data: 2, status: 'OK' }));
const p3 = new Promise(resolve => resolve({ data: 3, status: 'OK' }));

const promisesCatcher = promises => promises.map(promise => promise.catch(err => ({ data: err, status: 'ERROR' })));

Promise.all(
  promisesCatcher([p1, p2, p3])
).then(values => {
  for (let result of values) {
    if (result.status === 'ERROR') {
      console.error(result.data)
    } else {
      console.log(result.data);
    }
  }
});