import { Writable, Readable } from 'stream';
import { DatanauticsOptions } from './options';
export declare class Datanautics {
    protected options: DatanauticsOptions;
    protected data: Record<string, any>;
    protected lines: Map<string, string>;
    constructor(options?: DatanauticsOptions);
    init(stream: Readable): Promise<void>;
    store(stream: Writable): Promise<void>;
    restore(stream: Readable): Promise<void>;
    set(key: string, value: any, timestamp?: number): boolean;
    private storeKeyValue;
    get(key: string): any;
}