import { Collection, Db, MongoClient, MongoClientOptions } from 'mongodb';
export declare function setMongoClientOptions(options?: Partial<MongoClientOptions>): void;
export declare function resetMongoClient(): void;
export declare function getMongoClient(createConnection?: boolean, options?: Partial<MongoClientOptions>): Promise<MongoClient>;
export declare function getDatabase(databaseName: string): Promise<Db>;
export declare function getDatabaseCollection(databaseName: string, collectionName: string): Promise<Collection>;
export declare function closeDatabases(force?: boolean): Promise<void>;