import { OAuthProvider, OAuthTokens, OAuthProfile, AuthorizationUrlParams, TokenExchangeParams, ProviderConfig } from "./OAuthProvider";
import { OAuthProviderBase } from "./OAuthProviderBase";
/**
 * Google OAuth 2.0 provider implementation
 *
 * Implements OAuth flow for Google:
 * - Authorization URL: https://accounts.google.com/o/oauth2/v2/auth
 * - Token exchange: POST https://oauth2.googleapis.com/token
 * - User profile: GET https://www.googleapis.com/oauth2/v2/userinfo
 *
 * Default scopes: ['openid', 'email', 'profile']
 */
export declare class GoogleProvider extends OAuthProviderBase implements OAuthProvider {
    readonly name = "google";
    private static readonly AUTHORIZATION_URL;
    private static readonly TOKEN_URL;
    private static readonly USER_PROFILE_URL;
    private static readonly DEFAULT_SCOPES;
    constructor(config: ProviderConfig);
    /**
     * Generate Google authorization URL
     */
    getAuthorizationUrl(params: AuthorizationUrlParams): string;
    /**
     * Exchange authorization code for access token
     */
    exchangeCodeForToken(params: TokenExchangeParams): Promise<OAuthTokens>;
    /**
     * Fetch user profile from Google
     */
    getUserProfile(accessToken: string): Promise<OAuthProfile>;
}