A wrapper for Promise.all that accepts an object of promises and returns an object of response values

Promise.allObj.js

// extend Promise
Promise.allObj = promises => {
  return Promise
    .all(Object.values(promises))
    .then(values => {
      return values.reduce((obj, val, i) => {
        obj[Object.keys(promises)[i]] = val
        return obj
      }, {})
    })
}

// test
const one = new Promise(resolve => setTimeout(() => resolve(1), 100))
const two = new Promise(resolve => setTimeout(() => resolve(2), 200))
const three = new Promise(resolve => setTimeout(() => resolve(3), 300))

Promise
  .allObj({ a: one, b: two, c: three })
  .then(values => console.log(values)) // { a: 1, b: 2, c: 3 }