import { OAuth2NonceConfig, OAuth2StrategyConfig } from "./oauth2.types";
export declare class OAuth2Tools {
    static generateState(config: OAuth2StrategyConfig): Promise<string>;
    static generateNonce(config: OAuth2StrategyConfig): Promise<string>;
    static validateNonce(expectedNonce: string, nonce: string, config: OAuth2NonceConfig): Promise<boolean>;
    static extractState<TContext>(context: TContext): string | null;
    static extractNonce(idToken: string): string | null;
}
export declare const prepareOAuth2Config: <TContext = any, TUser = any>(config: Partial<OAuth2StrategyConfig<TContext, TUser>>) => OAuth2StrategyConfig<TContext, TUser>;