/**
 * Merges two objects or arrays.
 * @param target - The target object or array.
 * @param source - The source object or array.
 * @returns The merged object or array.
 *
 * @example
 * const target = { a: 1, b: 2 };
 * const source = { b: 3, c: 4 };
 * const merged = mergeObjects(target, source);
 * // merged will be:
 * // { a: 1, b: 3, c: 4 }
 *
 * @example
 * const target = [1, 2, 3];
 * const source = [4, 5, 6];
 * const merged = mergeObjects(target, source);
 * // merged will be:
 * // [1, 2, 3, 4, 5, 6]
 */
export declare function mergeObjects<T>(target: T, source: T): T;