import { IConnectionOptions } from "./Utils";
import { Observable, BehaviorSubject } from "rxjs";
import { MongoClient, Db } from "mongodb";
export declare class MongoConnection {
    private options;
    protected _OnConnectedSubject: BehaviorSubject<boolean>;
    protected _db: Db;
    protected _mongoClient: MongoClient;
    constructor(options: IConnectionOptions);
    OnConnect(): Observable<boolean>;
    protected _connected(): Promise<void>;
    connect(options?: IConnectionOptions): Promise<any>;
    close(forceClose?: boolean): Promise<void>;
}