import * as firebase from 'firebase';
import { Observable } from 'rxjs';
import { Room } from '../../domain/message/room';
export declare type RoomDoc = Omit<Omit<Room, 'updatedAt'>, 'createdAt'> & {
    createdAt: firebase.firestore.Timestamp;
    updatedAt: firebase.firestore.Timestamp;
};
export declare function roomMapper(roomDoc: RoomDoc): Room;
export declare type RoomsData = Room[];
export declare class RoomObserver {
    private readonly _rooms$;
    private readonly _close$;
    get rooms$(): Observable<RoomsData>;
    fetchRooms(limit?: number, startAfter?: Date): void;
    dispose(): void;
}