type InstanceClone<T> = true | ((value: T) => T);
/**
 * cloneDeep
 *
 * @example
 * ```ts
 * cloneDeep([1, 2])
 * => [1, 2]
 * cloneDeep({a: 1, b: 2})
 * => {a: 1, b: 2}
 * ```
 */
export declare function cloneDeep<T>(value: T, instanceClone?: InstanceClone<T>): T;
export {};