object promise all

object-promise-all.js

function asyncPrint(str, time) {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      console.log(`${new Date()}: ${str}`);
      resolve(`value ${str}`);
    }, time);
  });
}

const objectZip = (keys, values) =>
  keys.reduce(
    (others, key, index) => ({
      ...others,
      [key]: values[index]
    }),
    {}
  );

const objectPromise = async obj =>
  objectZip(Object.keys(obj), await Promise.all(Object.values(obj)));

console.log(
  objectPromise({
    1: asyncPrint("process A", 1000),
    2: asyncPrint("process B", 2000)
  })
);