import { IAppDB } from '../../mmApp';
import { MongoClient } from 'mongodb';
export declare class DB {
    sql: MongoClient | null;
    dbConnect: Promise<MongoClient> | null;
    errors: string[];
    params: IAppDB | null;
    constructor();
    isConnected(): Promise<boolean>;
    connect(): Promise<boolean>;
    close(): Promise<void>;
    destroy(): Promise<void>;
}