import type { Ref } from '@stacksjs/stx';
/**
 * Watch a source with deep comparison by serializing to JSON.
 * Since stx watch is shallow, this provides deep-watch behavior by
 * comparing JSON serializations.
 */
export declare function watchDeep<T>(source: Ref<T>, callback: (value: T) => void, options?: { immediate?: boolean }): () => void;