I have two question: 1- How to add "id" and "defer" and "async" attribute? 2- From where location that file is compiling, combing and generating that above file?
by default this file in end in the in the right place. If you want improve google page speed, need to do another changes. I have 6 years experience in cs cart cms and can you help with this.
If you really want to know where you can change this
line - $src = Registry::get('config.current_location') . '/' . fn_link_attach($params['src'], 'ver=' . Tygh::$app['assets_cache_key']);