import { NgZone } from '@angular/core';
import * as firebaseui from 'firebaseui';
import { FirebaseOptions, FirebaseAppSettings } from 'firebase/app';
import * as i0 from "@angular/core";
export declare class FirebaseuiAngularLibraryService {
    firebaseUiInstance: firebaseui.auth.AuthUI;
    constructor(options: FirebaseOptions, nameOrConfig: string | FirebaseAppSettings | null | undefined, _useEmulator: any, // can't use the tuple here
    zone: NgZone);
    static ɵfac: i0.ɵɵFactoryDeclaration<FirebaseuiAngularLibraryService, [null, { optional: true; }, { optional: true; }, null]>;
    static ɵprov: i0.ɵɵInjectableDeclaration<FirebaseuiAngularLibraryService>;
}