<pre><code class="language-javascript">
/**
 * @param {Array&lt;Promise&gt;} promises
 * @return {Promise}
 */
function race(promises) {
  // your code here
  if (promises.length === 0) return new Promise.resolve([]);
  const _promises = promises.map(item =&gt; item instanceof Promise ? item : Promise.resolve(item));

  let settled = false;
  return new Promise((resolve, reject) =&gt; {
    _promises.forEach(promise =&gt; {
      promise.then(res =&gt; {
        if (!settled) {
          settled = true;
          resolve(res);
        }
      }).catch(err =&gt; {
        if (!settled) {
          settled = true;
          reject(err);
        }
      })
    })
  })
}
</code></pre>


This is my accepted solution

This problem is similar to 31. implement async helper - race(), but with Promise. > The Promise.race() method returns a promise that fulfills or rejec…

36. create a fake timer(setTimeout)

36.  fake timer(setTimeout)を実装する

36. 实现一个 fake timer(setTimeout)

34. implement `Promise.any()`

34. `Promise.any()`を実装する

34. 实现`Promise.any()`

35. implement `Promise.race()`

35. `Promise.race()`を実装する

35. 实现`Promise.race()`