import { Observable } from 'rxjs';
import { ScriptLoader } from '@bootkit/angular/script';
import * as i0 from "@angular/core";
export declare class GoogleAuthentication {
    private document;
    private scriptLoader;
    private readonly _googleAuthUrl;
    private _signinSubject;
    private _baseUrl?;
    signin: Observable<{
        credential: string;
    }>;
    private _initialized;
    constructor(document: Document, scriptLoader: ScriptLoader);
    /**
   * Initializes the Google authentication process.
   * @param googleClientId - The client ID for the Google application.
   */
    initialize(googleClientId: string): Promise<unknown>;
    /**
     * Renders the Google Sign-In button .
     * @param buttonId - The ID of the HTML element where the button will be rendered.
     */
    renderGoogleButton(buttonId: string, options?: {
        width?: string;
        theme?: "outline" | "filled_blue" | "filled_black";
        size?: "small" | "medium" | "large";
        text?: "signin" | "signup_with" | "signin_with" | "continue_with";
        shape?: "rectangular" | "pill";
        logo_alignment?: "left" | "center";
        locale?: string;
    }): void;
    showOneTapDialog(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<GoogleAuthentication, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<GoogleAuthentication>;
}