title: evaluate website that uses es6 in phantomjs
body: <p>I would like to evaluate website that uses es6 features (arrow functions) but phantomjs 2.1 does not support it, so page becomes unresponsive and I can't manipulate it. Is there any way to use es6 features in phantomjs &lt;= 2.10 or to overwrite script file before page is loaded so I can use same file without new javascript features?</p>