export function deepClone(obj: Object): Object;
export function ensureObject<T>(value: T): T;
export function ensureObjectWithAnyConstructor<T>(value: T): T;
export function ensureObjectWithId(value: object, name: string): object;
export function ensureObjectWithKey(value: object, key: string, name: string): object;
export function extendNull<T>(obj: any): T;
export function filterObj<K, V>(obj: any, filter: (arg0: K, arg1: V) => boolean): any;
export function isObject(value: any): boolean;
export function isObjectWithAnyConstructor(value: any): boolean;
export function mapObj<K, VI, VO>(obj: any, map: (arg0: VI) => VO): any;