Unfortunately it is much larger than zero see <a href="https:&#x2F;&#x2F;groups.google.com&#x2F;d&#x2F;msg&#x2F;strengthen-js&#x2F;ojj3TDxbHpQ&#x2F;T6bTRDlnEwAJ" rel="nofollow">https:&#x2F;&#x2F;groups.google.com&#x2F;d&#x2F;msg&#x2F;strengthen-js&#x2F;ojj3TDxbHpQ&#x2F;T6...</a>.<p>It is very sad that people working on es spec do not care enough about performance