Timeout a JS promise

index.js

'use strict';

const timeoutPromise = ms => promise => new Promise((resolve, reject) => {
  const timeout = setTimeout(() => {
    reject(new PromiseTimeout());
  }, ms);
  promise.then(
    res => {
      clearTimeout(timeout);
      resolve(res);
    },
    err => {
      clearTimeout(timeout);
      reject(err);
    }
  );
});

export default timeoutPromise;

export class PromiseTimeout {
  constructor() {
    this.name = 'PromiseTimeout';
  }
}