vimeo / psalm

                $directory_path = realpath($prospective_directory_path);

                if (!$directory_path) {

                    if ($allow_missing_files) {

                        continue;

                    }

                    throw new ConfigException(

                        'Could not resolve config path to ' . $base_dir

                            . DIRECTORY_SEPARATOR . (string)$directory['name']

                    );

                }

                if (!is_dir($directory_path)) {

                    throw new ConfigException(

                    );

                }

                if (!is_dir($directory_path)) {

                    throw new ConfigException(

                        $base_dir . DIRECTORY_SEPARATOR . (string)$directory['name']

                            . ' is not a directory'

                    );

                }

                /** @var \RecursiveDirectoryIterator */

                $iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($directory_path));