import type { GoogleSocialUser, SocialProvider } from './SocialProvider.js';
/**
 * Options for Google OAuth2 ID-token verification.
 */
export interface GoogleProviderOptions {
    /**
     * Expected Google OAuth client id for the token `aud` claim.
     */
    readonly clientId: string;
    /**
     * Tokeninfo endpoint override, primarily for tests.
     */
    readonly tokenInfoEndpoint?: string;
    /**
     * Fetch implementation override, primarily for tests.
     */
    readonly fetch?: typeof globalThis.fetch;
}
/**
 * Verifies Google OAuth2 ID tokens and normalizes their tokeninfo payload.
 */
export declare class GoogleProvider implements SocialProvider<GoogleSocialUser> {
    private readonly clientId;
    private readonly tokenInfoEndpoint;
    private readonly fetch;
    /**
     * @param options - Google provider verification options.
     */
    constructor(options: GoogleProviderOptions);
    /**
     * @param idToken - Google-issued ID token.
     * @returns Normalized Google social user profile.
     * @throws UnauthorizedHttpException When the token is missing, rejected, or malformed.
     */
    verify(idToken: string): Promise<GoogleSocialUser>;
    private toSocialUser;
}
//# sourceMappingURL=GoogleProvider.d.ts.map