import { Analytics as FirebaseAnalytics } from "firebase/analytics";
import { FirebaseFeatures } from "./Types/FirebaseFeatures";
declare class FirebaseModule {
    private _app;
    private _analytics;
    private _auth;
    private _functions;
    private _availableFeatures;
    private _loggedIn;
    constructor();
    private _firebaseUserId;
    get firebaseUserId(): string;
    private _initialized;
    get initialized(): boolean;
    isLoggedIn(): boolean;
    initialize(features?: Array<FirebaseFeatures>): void;
    setProgressOnFirebase(_userId: string, _userToken: string, _progress: number): Promise<void>;
    /**
     * @deprecated Removed facebook support as of Pixi v8 upgrade
     * @param userId
     * @param signature
     */
    registerFirebaseWithFacebookSignature(userId: string, signature: string): Promise<string>;
    loginToFirebaseWithToken(token: string): Promise<void>;
    getAnalytics(): FirebaseAnalytics;
    getLoggedInUserToken(): Promise<string>;
    getFriendsProgress(userId: string, signature: string): Promise<Array<{
        uid: string;
        progress: number;
    }>>;
    private _supportsFeature;
}
export declare const FirebaseSingleton: FirebaseModule;
export {};