Limits race #async-await #medium

async-race.js

const randAsyncTimer = (i) => {
  // Timeout within 1 second
  const timeout = Math.floor(Math.random() * 1000);
  return new Promise((resolve) => setTimeout(() => resolve(i), timeout));
};

async () => {
  let calls = [randAsyncTimer(1), randAsyncTimer(2), randAsyncTimer(3)];
  // Start the race
  const result = await Promise.race(calls);
  console.log(result);
  // Possible outputs are between 1 to 3
}