If you&#x27;re hoping to use native V8 Promises, beware using them with other promise libraries &#x2F; custom thenables because of <a href="https:&#x2F;&#x2F;code.google.com&#x2F;p&#x2F;v8&#x2F;issues&#x2F;detail?id=4162" rel="nofollow">https:&#x2F;&#x2F;code.google.com&#x2F;p&#x2F;v8&#x2F;issues&#x2F;detail?id=4162</a> (more detail and test case in <a href="https:&#x2F;&#x2F;github.com&#x2F;zloirock&#x2F;core-js&#x2F;issues&#x2F;78" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;zloirock&#x2F;core-js&#x2F;issues&#x2F;78</a> )