private function prepare(array $folders)
    {
        return collect($folders)->mapWithKeys(function ($folder) {
            $path = base_path($folder);

            return [
                $folder => [
                    'chmod'    => (int) substr(sprintf('%o', fileperms($path)), -4),
                    'writable' => is_writable($path),
                ],
            ];
        });
    }