This is an example of how Minifine would run when in a development environment.
When in development mode the resources will be minified, however unminified versions will be loaded when the page is requested to ease debugging.
<?= $minifier->css(['/css/bootstrap.min.css', '/css/custom.css'], '/css/styles.min.css'); ?>
<?= $minifier->js(['/js/jquery-1.11.2.min.js', '/js/bootstrap.min.js', '/js/custom.js'], '/js/main.min.js'); ?>
Check the source of this page to see the rendered HTML.