/**
 * This module contains a simple utility function to merge two objects deeply
 * @module
 */
/**
 * Deeply merges two objects or arrays
 * @function deepMerge
 * @template T - Type of target object
 * @template U - Type of source object
 * @param target - The target object to merge into
 * @param source - The source object to merge from
 * @returns A new object with merged properties
 */
export declare function deepMerge<T, U>(target: T, source: U): T & U;