import { FirebaseApp, FirebaseOptions } from 'firebase/app';
import { DocumentData, DocumentReference, Firestore, Unsubscribe } from 'firebase/firestore';
type OnUpdateCallback = (data: DocumentData | undefined) => void;
export declare class FirebaseWrapper {
    _app: FirebaseApp;
    _db: Firestore;
    _roomName?: string;
    _roomRef?: DocumentReference<DocumentData, DocumentData>;
    _room: {
        [key: string]: boolean | string | object | null;
    };
    constructor(config: FirebaseOptions);
    createRoom(roomName: string, ref: string): Promise<boolean>;
    joinRoom(roomName: string, onUpdateCb: OnUpdateCallback): Promise<Unsubscribe | undefined>;
    leaveRoom(): Promise<void>;
    updateRoom(action: string, data: boolean | string | object | null): Promise<void>;
    onRoomUpdate(cb: OnUpdateCallback): Unsubscribe;
}
export {};