/**
 * Merges objects together while keeping their getters alive.
 * Taken from SolidJS:
 * https://github.com/solidjs/solid/blob/24abc825c0996fd2bc8c1de1491efe9a7e743aff/packages/solid/src/server/rendering.ts#L82-L115
 */
export declare function mergeObjects<T>(source: T): T;
export declare function mergeObjects<T, U>(source: T, source1: U): T & U;
export declare function mergeObjects<T, U, V>(source: T, source1: U, source2: V): T & U & V;
export declare function mergeObjects<T, U, V, W>(source: T, source1: U, source2: V, source3: W): T & U & V & W;