I would love an async&#x2F;await feature. Though generators have been added, and they are currently optimization killers in V8: <a href="https:&#x2F;&#x2F;github.com&#x2F;petkaantonov&#x2F;bluebird&#x2F;wiki&#x2F;Optimization-killers" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;petkaantonov&#x2F;bluebird&#x2F;wiki&#x2F;Optimization-k...</a>