Promise.race timeout

Promise.race.timeout.js

function delay(time) {
  return new Promise(fulfill => {
    setTimeout(fulfill, time);
  });
}

Promise.race([longRunningPromise, delay(time).then(function () {
  throw new Error('Operation timed out');
})])
.then(value => { console.log(value); })
.catch(reason => { console.log(reason); });

function timeout(time) {
    return new Promise((_, reject) => {
        setTimeout(() => {
            reject(new Error('Operation timed out'));
        }, time);
    });
}

Promise.race([longRunningPromise, timeout(time)])
    .then(value => { console.log(value); })
    .catch(reason => { console.log(reason); });