import type { InstanceType, ListenerCallback, SignedInSession, SignInRedirectOptions, SignInResource, SignInResponseTree, SignOut, SignUpRedirectOptions, SignUpResource, TernSecureAuth as TernSecureAuthInterface, TernSecureAuthOptions, TernSecureSDK, TernSecureUser, UnsubscribeCallback } from '@tern-secure/types';
import type { Auth as TernAuth } from 'firebase/auth';
import { AuthCookieManager } from '../resources/internal';
export declare function inBrowser(): boolean;
export { TernAuth };
/**
 * Firebase implementation of the TernSecureAuth interface
 */
export declare class TernSecureAuth implements TernSecureAuthInterface {
    #private;
    static version: string;
    static sdkMetadata: TernSecureSDK;
    private static instance;
    private _currentUser;
    private signedInSession;
    private firebaseClientApp;
    private authStateUnsubscribe;
    private auth;
    private csrfToken;
    isLoading: boolean;
    error: Error | null;
    user: TernSecureUser | null | undefined;
    __internal_country?: string | null;
    signIn: SignInResource;
    signUp: SignUpResource;
    get isReady(): boolean;
    get status(): TernSecureAuthInterface['status'];
    get version(): string;
    set sdkMetadata(metadata: TernSecureSDK);
    get sdkMetadata(): TernSecureSDK;
    get requiresVerification(): boolean;
    get apiUrl(): string;
    getApiUrl: () => string;
    get domain(): string;
    get instanceType(): InstanceType | undefined;
    constructor(options?: TernSecureAuthOptions);
    setLoading(isLoading: boolean): void;
    authCookieManager(): AuthCookieManager | undefined;
    static getorCreateInstance(options?: TernSecureAuthOptions): TernSecureAuth;
    static clearInstance(): void;
    static initialize(options: TernSecureAuthOptions): TernSecureAuth;
    private initializeFirebaseApp;
    signOut: SignOut;
    get currentSession(): SignedInSession | null;
    private initAuthStateListener;
    private _onIdTokenChanged;
    onAuthStateChanged(callback: (cb: any) => void): () => void;
    onIdTokenChanged(callback: (cb: any) => void): () => void;
    private updateCurrentSession;
    checkRedirectResult(): Promise<SignInResponseTree | null>;
    addListener: (listener: ListenerCallback) => UnsubscribeCallback;
    on: TernSecureAuthInterface['on'];
    off: TernSecureAuthInterface['off'];
    initialize(options: TernSecureAuthOptions): Promise<void>;
    static create(options: TernSecureAuthOptions): TernSecureAuth;
    _initialize: (options: TernSecureAuthOptions) => void;
    constructUrlWithAuthRedirect: (to: string) => string;
    constructSignInUrl: (options?: SignInRedirectOptions) => string;
    constructSignUpUrl: (options?: SignUpRedirectOptions) => string;
    __internal_setCountry: (country: string | null) => void;
}
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