import type { CollectionBeforeChangeHook } from 'payload';
/**
 * A CollectionBeforeChangeHook that prevents circular parent references.
 *
 * It detects and rejects:
 * - Direct self-references (doc.parent = doc.id)
 * - Two-node cycles (A -> B -> A)
 * - Deep cycles (A -> B -> C -> A)
 */
export declare const preventCircularParentReference: CollectionBeforeChangeHook;