visual-portfolio | Portfolio layouts visual editor with Gutenberg | Frontend Framework library

Here's idea, js and css files in WP use different technique to figure out in what order js\css files should be loaded.

here's function

wp_enqueue_script('custom-js', get_stylesheet_directory_uri() . '/js/custom-js.js', array('js-handle-of-some-dependency','js-handle-of-some-other-dependency'), true);

Each script has it's handle, it's first argument to this function, in your case it's custom-js.

Based on digging into plugin's code it's main js has handle visual-portfolio

So you can just enqueue your script with setting it's handle as dependency.

And final solution will be: