code: public function isActiveRoute($routeName, $output = "active")
      {
          if (strpos($routeName, '*') !== false) {
              // Quote all RE characters, then undo the quoted '*' characters to match any
              // sequence of non-'.' characters.
              $regex = '/^' . str_replace(preg_quote('*'), '[^.]*?', preg_quote($routeName, '/')) . '/';
              if (preg_match($regex, $this->route->currentRouteName())) {
                  return $output;
              }
  
          } elseif ($this->route->currentRouteName() == $routeName) {
              return $output;
          }
  
          return null;
      }
docs: Compares given route name with current route name.
  Any section of the route name can be replaced with a * wildcard.
  Example: user.*
  
  @param  string  $routeName
  @param  string  $output
  @return boolean