import { FirebaseApp } from 'firebase/app';
import { Auth } from 'firebase/auth';
import { ref, Database, goOnline, goOffline } from 'firebase/database';
declare let firebaseApp: FirebaseApp;
declare let auth: Auth;
declare let database: Database;
export declare const initFirebase: (config?: any) => void;
export { database, firebaseApp, auth, ref, goOnline, goOffline };
export declare const getPath: (path: string) => string;
export declare const setAuthStateChangeCallback: (callback: (user: any) => void) => void;
export declare const signUp: (email: string, password: string) => Promise<import("firebase/auth").User>;
export declare const signInUser: (email: string, password: string) => Promise<import("firebase/auth").User>;
export declare const signOutUser: () => Promise<void>;
export declare const readData: (path: string) => Promise<any>;
export declare const writeData: (path: string, data: any) => Promise<void>;
export declare const onDataChange: (path: string, callback: (snapshot: any) => void) => import("firebase/database").Unsubscribe;
export declare const onDataChanged: (path: string, callback: (snapshot: any) => void) => import("firebase/database").Unsubscribe;
export declare const removeDataListener: (listener: any) => void;
declare const _default: {
    signInUser: (email: string, password: string) => Promise<import("firebase/auth").User>;
    signOutUser: () => Promise<void>;
    readData: (path: string) => Promise<any>;
    writeData: (path: string, data: any) => Promise<void>;
    onDataChange: (path: string, callback: (snapshot: any) => void) => import("firebase/database").Unsubscribe;
    removeDataListener: (listener: any) => void;
    onDataChanged: (path: string, callback: (snapshot: any) => void) => import("firebase/database").Unsubscribe;
};
export default _default;