import firebase from "firebase/app";
import "firebase/database";
import "firebase/auth";
import "firebase/functions";
import "firebase/firestore";
import { SDKOptions } from "../../types/options";
export declare const SERVER_TIMESTAMP: Object;
export declare const __firebase: typeof firebase;
/**
 * @hidden
 */
export declare class FirebaseApp {
    protected standalone: boolean;
    app: firebase.app.App;
    constructor(options: SDKOptions);
    private getApp;
    connectEmulators(options: SDKOptions): void;
    goOnline(): void;
    goOffline(): void;
    disconnect(): Promise<any>;
}