import { FdpStorage } from '@fairdatasociety/fdp-storage';
import { BeeSon } from '@fairdatasociety/beeson';
import { JsonValue } from '@fairdatasociety/beeson/dist/types';
import { Reference } from '@ethersphere/swarm-cid';
import { CID } from 'multiformats/cid';
import { FeedDB } from './feeddb';
import { FeedSequencerOptions } from './feedsequencer';
export interface SaveDatabaseCallbackArgs {
    reference: Reference;
    cid: CID;
}
export interface LoadDatabaseCallbackArgs {
    data: BeeSon<JsonValue>;
}
/**
 * Get CID from Beeson helper
 * @param beeson beeson value
 * @returns A CID
 */
export declare function getCidFromBeeson(beeson: BeeSon<JsonValue>): Promise<CID>;
/**
 * fdp storage Loki DB Adapter
 */
export declare class LokiFDPAdapter {
    private fdp;
    private options;
    db: FeedDB;
    constructor(fdp: FdpStorage, dbname: string, options: FeedSequencerOptions);
    saveDatabase(key: string, value: BeeSon<JsonValue>, callback: (err: Error | null, args?: SaveDatabaseCallbackArgs) => void): Promise<void>;
    loadDatabase(dbname: string, callback: (err: Error | null, args?: LoadDatabaseCallbackArgs) => void): Promise<void>;
}