const p1 = new Promise((resolve, reject) => {
  setTimeout(resolve, 301, { message: 'Resolve Promise 1'});
});

const p2 = new Promise((resolve, reject) => {
  setTimeout(resolve, 299, { message: 'Resolve Promise 2' });
});

const p3 = new Promise((resolve, reject) => {
  setTimeout(reject, 300, new Error('Reject Promise 3'));
});

/**
 * Will return faster promise (p2) result.
 */
Promise.race([
  p1,
  p2,
  p3
]).then((obj) => {
    console.log(obj.message);
}).catch((error) => {
    console.log(error);
});

/**
 * Will catch p3 and ignores other promises.
 */
Promise.all([
  p1,
  p2,
  p3
]).then((obj) => {
    console.log(obj);
}).catch((error) => {
    console.log(error);
});

/**
 * Will return a collection of promises result.
 */
Promise.all([
  p1,
  p2
]).then((obj) => {
    console.log(obj);
}).catch((error) => {
    console.log(error);
});