setup.php

/**
 * Theme assets
 */
function assets() {
  wp_enqueue_style('sage/css', Assets\asset_path('styles/main.css'), false, null);

  if (is_single() && comments_open() && get_option('thread_comments')) {
    wp_enqueue_script('comment-reply');
  }

  wp_deregister_script( 'jquery' );
  wp_enqueue_script('jquery', Assets\asset_path('scripts/jquery.js'), null, null, true);

  wp_enqueue_script('popper/js', Assets\asset_path('scripts/popper.js'), ['jquery'], null, true);

  wp_enqueue_script('sage/js', Assets\asset_path('scripts/main.js'), ['jquery', 'popper/js'], null, true);
}
add_action('wp_enqueue_scripts', __NAMESPACE__ . '\\assets', 100);

if (!CLI_SCRIPT) {
echo('Command line scripts must define CLI_SCRIPT before requiring config.php'."\n");
exit(1);
}