Jarves\AssetHandler\AssetInfo::isJavaScript PHP Метод

    public function isJavaScript()
    {
        if ($this->getContentType()) {
            return 'text/javascript' === strtolower($this->getContentType());
        }
        if ($this->getPath()) {
            $exploded = explode('.', $this->getPath());
            return 'js' === strtolower(array_pop($exploded));
        }
        return false;
    }