/**
 * Return false if not an object, or is an object with no own properties
 */
export declare function isEmptyObject(candidate: any): boolean;
export declare function deepClone<T>(obj: T): T;
/**
 * Performs a deep merge of `source` into `target`.
 * Mutates `target` only but not its objects and arrays.
 *
 * @author inspired from https://gist.github.com/ahtcx/0cd94e62691f539160b32ecda18af3d6#gistcomment-3120712
 */
export declare function deepMerge(...objects: object[]): object;