export interface AuthorizationServerMetadata {
    issuer: string;
    authorization_endpoint: string;
    token_endpoint: string;
    registration_endpoint?: string;
    jwks_uri?: string;
    scopes_supported?: string[];
    response_types_supported?: string[];
    grant_types_supported?: string[];
    code_challenge_methods_supported?: string[];
    token_endpoint_auth_methods_supported?: string[];
}
export declare function discoverAuthorizationServer(baseUrl: string, fetchImpl?: typeof fetch): Promise<AuthorizationServerMetadata>;
export declare function clearDiscoveryCache(): void;