import type { Ref } from '@stacksjs/stx';
/**
 * Two-way sync between two refs.
 *
 * @param left - First ref
 * @param right - Second ref
 * @param options - Sync direction options
 * @returns A stop function to cancel the sync
 */
export declare function syncRef<T>(left: Ref<T>, right: Ref<T>, options?: SyncRefOptions): () => void;
/**
 * Sync multiple source refs to a target ref.
 *
 * @param sources - Array of source refs
 * @param target - Target ref that will be updated when any source changes
 * @returns A stop function to cancel all watches
 */
export declare function syncRefs<T>(sources: Ref<T>[], target: Ref<T>): () => void;
export declare interface SyncRefOptions {
  direction?: 'ltr' | 'rtl' | 'both'
}