type ChangeCallback = (newMap: ReadonlyMap<string, string>, oldMap: ReadonlyMap<string, string>) => void;
declare function Crontab(crontabPath: string): Promise<Map<string, string> & {
    onDidChange(cb: ChangeCallback): void;
    offDidChange(cb: ChangeCallback): void;
    close(): Promise<void>;
}>;
export default Crontab;