declare const LOGIN_MODE: readonly ["always", "only_if_required"];
type LoginMode = (typeof LOGIN_MODE)[number];
interface CreateLoginGroupParams {
    name: string;
    loginMode: LoginMode;
}
export declare class Google {
    private static instance;
    private loginUrl;
    private client;
    private constructor();
    static getInstance({ apiKey, loginUrl, }: {
        apiKey: string;
        loginUrl: string;
    }): Google;
    createLoginGroup(params: CreateLoginGroupParams): Promise<unknown>;
}
export {};