code: public function registerDirectives(BladeCompiler $blade)
      {
          $keywords = [
              "namespace",
              "use",
          ];
  
          foreach ($keywords as $keyword) {
              $blade->directive($keyword, function ($parameter) use ($keyword) {
                  $parameter = trim($parameter, "()");
                  return "<?php {$keyword} {$parameter} ?>";
              });
          }
  
          $assetify = function ($file, $type) {
              $file = trim($file, "()");
              if (in_array(substr($file, 0, 1), ["'", '"'], true)) {
                  $file = trim($file, "'\"");
              } else {
                  return "{{ {$file} }}";
              }
              if (substr($file, 0, 1) !== "/") {
                  $file = "/{$type}/{$file}";
              }
              if (substr($file, (strlen($type) + 1) * -1) !== ".{$type}") {
                  $file .= ".{$type}";
              }
              return $file;
          };
  
          $blade->directive("css", function ($parameter) use ($assetify) {
              $file = $assetify($parameter, "css");
              return '<link rel="stylesheet" type="text/css" href="' . $file . '"/>';
          });
  
          $blade->directive("js", function ($parameter) use ($assetify) {
              $file = $assetify($parameter, "js");
              return '<script type="text/javascript" src="' . $file . '"></script>';
          });
      }
docs: Add extra directives to the blade templating compiler.
  
  @param BladeCompiler $blade The compiler to extend
  
  @return void