execAllPromises.js

// Copied from SO

/**
 * @param  {Promise} promise
 */

function reflect(promise) {
  return promise
    .then(d => {
      return {
        d: d,
        status: 'resolved'
      };
    }).catch(e => {
      return {
        e: e,
        status: 'rejected'
      };
    });
}

/**
 * @param  {Array} promiseList
 * Executes all the promises even if one of them fails
 * Final result is in resolution, result[i][status] represents rejection or resolution of each promise
 */

function execAllPromises(promiseList) {
  return Promise.all(promiseList.map(reflect));
}

// Usage
execAllPromises([
  fetch('https://en.wikipedia.org/api/rest_v1/page/'),
  fetch('https://en.wikipedia.org/api/rest_v1/page/title/')
]).then(result => console.log(result));