public static function dir()
    {
        $JSTORE_DIR         = str_replace(DIRECTORY_SEPARATOR, '/', __DIR__);
        $JSTORE_DOCS_ROOT   = str_replace(DIRECTORY_SEPARATOR, '/', isset($_SERVER['DOCUMENT_ROOT']) ? realpath($_SERVER['DOCUMENT_ROOT']) : dirname(__DIR__));
        return trim(str_replace($JSTORE_DOCS_ROOT, '', $JSTORE_DIR), "/");
    }