/** Name of a file when none is given, without the extension */
export declare const DEFAULT_NAME = "Untitled";
/** File extension for code in `language`, without the dot */
export declare function extensionOf(language: string): string;
/**
 * Name of the downloaded file: the given name without path separators and characters that file systems reject,
 * `Untitled` when it is empty, with the extension of the language when it has none
 */
export declare function fileName(language: string, name?: string): string;