declare namespace ObjectUtils {
    function buildProps<T extends {
        props?: object;
    }, TKey extends keyof T>(props: T, keys: Readonly<TKey[]>, extraTagProps?: object): T;
    function isObject(value: unknown): value is object;
    function mergeDeep<T>(...objects: T[]): T;
    function isKeyOf<T extends object>(key: any, obj: T): key is keyof T;
}
export default ObjectUtils;