/**
 * Gets the cached snapshot for a node without creating one if it doesn't exist.
 * Returns undefined if no snapshot has been cached yet.
 * @internal
 */
export declare function getCachedSnapshot<T extends object>(node: T): T | undefined;
export declare const invalidateSnapshotTreeToRoot: (node: object) => void;
/**
 * Returns a stable snapshot of a node.
 *
 * This function computes and caches a snapshot of the given node.
 * It preserves referential integrity by reusing snapshots for unchanged sub-parts.
 *
 * If not a node it will throw.
 *
 * @param node - The node to snapshot.
 * @returns A snapshot of the node.
 */
export declare function getSnapshot<T extends object>(node: T): T;