public function config()
    {
        $config = config('packer');

        if (empty($config['environment'])) {
            $config['environment'] = app()->environment();
        }

        if (empty($config['public_path'])) {
            $config['public_path'] = public_path();
        }

        if (empty($config['asset'])) {
            $config['asset'] = asset('');
        }

        return $config;
    }