import { MongoClient } from 'mongodb';
type MongoSessionDaemonOptions = {
    debug?: boolean;
    reconnectInterval?: number;
};
export declare class MongoClientDaemon {
    constructor(url: string, options?: MongoSessionDaemonOptions);
    url: string;
    destroyed: boolean;
    connected: boolean;
    connectingPromise?: Promise<void>;
    session?: MongoClient;
    connectError?: Error;
    options: Required<MongoSessionDaemonOptions>;
    createSession(): void;
    keepSession(): void;
    getSession(): Promise<MongoClient>;
    ok(): Promise<void>;
    destroy(): Promise<void>;
}
export {};