import * as Y from "yjs";
/**
 * WeakMap that tracks which snapshot each Y.js container was last synced from.
 * This is used during reconciliation to skip containers that are already up-to-date.
 *
 * The key is the Y.js container (Y.Map or Y.Array).
 * The value is the snapshot (plain object or array) that was last synced to it.
 */
export declare const yjsContainerToSnapshot: WeakMap<Y.Map<any> | Y.Array<any>, unknown>;
/**
 * Updates the snapshot tracking for a Y.js container.
 * Call this after syncing a snapshot to a Y.js container.
 */
export declare function setYjsContainerSnapshot(container: Y.Map<any> | Y.Array<any>, snapshot: unknown): void;
/**
 * Gets the last synced snapshot for a Y.js container.
 * Returns undefined if the container has never been synced.
 */
export declare function getYjsContainerSnapshot(container: Y.Map<any> | Y.Array<any>): unknown;
/**
 * Checks if a Y.js container is up-to-date with the given snapshot.
 * Uses reference equality to check if the snapshot is the same.
 */
export declare function isYjsContainerUpToDate(container: Y.Map<any> | Y.Array<any>, snapshot: unknown): boolean;