/**
 * Serialization and deserialization for HNSW indexes.
 *
 * Format:
 * JSON-encoded structure containing:
 * - config: { maxLayer, maxNumberOfNeighbors, efConstruction, efSearch }
 * - entrypointKey
 * - nodes: Array of { key, vector, maxLayer, neighbors: Record<layer, keys[]> }
 */
import { HnswIndex } from './hnsw-index';
/**
 * Serialize an HNSW index to a Uint8Array.
 */
export declare function serializeHnswIndex(index: HnswIndex): Uint8Array;
/**
 * Deserialize an HNSW index from a Uint8Array.
 */
export declare function deserializeHnswIndex(bytes: Uint8Array): HnswIndex;
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