GabrielJMJ / ShouldPHP

            $path = realpath($dir);

            $entries = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($path), \RecursiveIteratorIterator::SELF_FIRST);

            foreach ($entries as $key => $name) {

                $files[$key] = $name;

                $e = explode('\\', $name);

                if (end($e) === '.' || end($e) === '..' || is_dir($name)) {

                    unset($files[$key]);

                }

            }

        }

        $ambients = ['files' => [], 'classes' => []];

        $entries = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($path), \RecursiveIteratorIterator::SELF_FIRST);

        $files = [];

        foreach ($entries as $key => $name) {

            $files[$key] = $name;

            $e = explode('\\', $name);

            if (end($e) === '.' || end($e) === '..' || is_dir($name) || !$this->appliesTheRule($name)) {

                unset($files[$key]);

            }

        }

        return $files;

    }