Promise example

Why would you use this? 
Promise.any() lets you run a list of promises
Concurrently, ignoring any that reject unless all of the promises reject

Promise.any([
  fetch("https://google.com/").then(() => "google"),
  fetch("https://apple.com").then(() => "apple"),
  fetch("https://microsoft.com").then(() => "microsoft"),
])
  .then((first) => {
    // Any of the promises was fulfilled.
    console.log(first);
  })
  .catch((error) => {
    // All of the promises were rejected.
    console.log(error);
  });

Promise.race() also takes an array of promises, but it fulfills or rejects as soon as any one of the promises fulfills or rejects.

import getBlogPost from "./utils/getBlogPost";
const wait = (time) => new Promise((resolve) => setTimeout(resolve, time));

Promise.race([
  getBlogPost(1),
  wait(1000).then(() => Promise.reject("Request timed out")),
])
  .then(([blogPost]) => {
    // If getBlogPost fulfilled first, we'll get it here
  })
  .catch((error) => {
    // If the request timed out, the `Promise.reject` call
    // above will cause this catch block to execute
  });