JsAssetController.php

<?php

namespace Drupal\system\Controller;

use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
use Drupal\Core\Asset\AttachedAssetsInterface;
use Drupal\Core\Asset\AssetGroupSetHashTrait;

/**
 * Defines a controller to serve Javascript aggregates.
 */
class JsAssetController extends AssetControllerBase {
    use AssetGroupSetHashTrait;
    
    /**
     * {@inheritdoc}
     */
    protected string $contentType = 'text/javascript';
    
    /**
     * {@inheritdoc}
     */
    protected string $assetType = 'js';
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container) {
        return new static($container->get('stream_wrapper_manager'), $container->get('library.dependency_resolver'), $container->get('asset.resolver'), $container->get('theme.initialization'), $container->get('theme.manager'), $container->get('asset.js.collection_grouper'), $container->get('asset.js.collection_optimizer'), $container->get('asset.js.dumper'));
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getGroups(AttachedAssetsInterface $attached_assets, Request $request) : array {
        // The header and footer scripts are two distinct sets of asset groups. The
        // $group_key is not sufficient to find the group, we also need to locate it
        // within either the header or footer set.
        $language = $this->languageManager()
            ->getLanguage($request->get('language'));
        [
            $js_assets_header,
            $js_assets_footer,
        ] = $this->assetResolver
            ->getJsAssets($attached_assets, FALSE, $language);
        $scope = $request->get('scope');
        if (!isset($scope)) {
            throw new BadRequestHttpException('The URL must have a scope query argument.');
        }
        $assets = $scope === 'header' ? $js_assets_header : $js_assets_footer;
        // While the asset resolver will find settings, these are never aggregated,
        // so filter them out.
        unset($assets['drupalSettings']);
        return $this->grouper
            ->group($assets);
    }

}