/**
  * @param PackageResource|null $packageResource
  *
  * @return array
  */
 protected function resolveJsFilters(PackageResource $packageResource = null)
 {
     $jsFilters = $this->getJsFilters();
     if (null !== $packageResource) {
         $jsFilters = array_merge($jsFilters, $packageResource->getJsFilters()->toArray());
     }
     return $jsFilters;
 }