export interface UseOAuthSignInReturn {
    /** Initiate OAuth sign-in / sign-up (unauthenticated). */
    initiateOAuth: ({ provider, redirectAfterAuth }: {
        provider: string;
        redirectAfterAuth?: string;
    }) => Promise<void>;
    /** Link a new OAuth provider to the current authenticated user. */
    linkOAuthProvider: ({ provider, redirectAfterAuth }: {
        provider: string;
        redirectAfterAuth?: string;
    }) => Promise<void>;
    /** Call on the callback page to extract tokens from the URL fragment. */
    handleOAuthCallback: () => boolean;
    isLoading: boolean;
    error: string | null;
}
/**
 * Web-only hook for OAuth sign-in and identity linking.
 * Uses window.location for redirect-based OAuth flow.
 *
 * Usage (sign-in):
 *   const { initiateOAuth, handleOAuthCallback } = useOAuthSignIn();
 *   await initiateOAuth("google", "https://myapp.com/auth/callback");
 *
 * Usage (link provider to current user):
 *   const { linkOAuthProvider, handleOAuthCallback } = useOAuthSignIn();
 *   await linkOAuthProvider("github", "https://myapp.com/settings");
 *
 * On the callback page (component mount):
 *   useEffect(() => { handleOAuthCallback(); }, []);
 */
declare function useOAuthSignIn(): UseOAuthSignInReturn;
export default useOAuthSignIn;