import { Doc } from "yjs";
export type YDurableObjectPersistenceOptions = {
    flushBytes?: number;
    flushUpdateClock?: number;
    maxChunkBytes?: number;
};
export declare const DEFAULT_FLUSH_BYTES: number;
export declare const DEFAULT_CHUNK_MAX_BYTES: number;
export declare const DEFAULT_FLUSH_UPDATE_CLOCK = 300;
export declare const UPDATE_KEY_MAX_DIGITS = 6;
export declare const VERSION = "v1";
export declare const KEY_PREFIX: string;
export declare const BYTES_KEY: string;
declare const UPDATES_KEY = "updates";
declare const MERGED_KEY = "merged";
export declare const UPDATES_KEY_PREFIX: string;
export declare const MERGED_KEY_PREFIX: string;
export declare const createStorageKey: (type: typeof UPDATES_KEY | typeof MERGED_KEY, clock: number) => string;
/**
 * @description YDurableObjectPersistence is a class that provides an interface to persist and retrieve Yjs documents in a Durable Object Transactional Storage.
 */
export declare class YDurableObjectPersistence {
    private readonly ctx;
    private readonly flushBytes;
    private readonly flushUpdateClock;
    private readonly maxChunkBytes;
    constructor(ctx: DurableObjectState, options?: YDurableObjectPersistenceOptions);
    private get storage();
    /**
     * @description Internally YDurableObjectPersistence stores incremental updates. This method merges all updates into several chunks. (The reason why updates are not merged into a single update is due to the size limit of the values in Transactional Storage.)
     */
    flushDocument(): Promise<void>;
    /**
     * @description Create a Y.Doc instance with the data persisted in Durable Object Transactional Storage. Use this to temporarily create a Yjs document to sync changes or extract data.
     * @returns the Yjs document
     */
    getYDoc(): Promise<Doc>;
    /**
     * @description Store a single document update to the database. This method is used to store updates that are received from clients.
     * @returns the clock of the update
     */
    storeUpdate(update: Uint8Array): Promise<number>;
    /**
     * @description clear all updates from storage
     */
    clear(): Promise<void>;
}
export {};