export declare const defaultHasChanged: (obj: any, v: any, k: string) => boolean; export declare const useObjectPropEffect: (propName: string, propValue: V | null | undefined, ref: React.MutableRefObject | null | undefined, updateValue?: (obj: any, v: any, k: string) => void, hasChanged?: (obj: any, v: any, k: string) => boolean) => void; export default useObjectPropEffect;