public static function getConfig(array $appConfig = []) : array
  {
    $configs = DEPConfig::$appdir . 'config' . DIRECTORY_SEPARATOR . '*.php';

    foreach (\glob($configs) as $config) {
      $service = require $config;

      if (is_array($service)) {
        $path = basename($config);
        $name = \substr($path, 0, strlen($path) - 4);
        $appConfig = array_merge($appConfig, [$name => $service]);
      }
    }

    return $appConfig;
  }