import '@curveball/kernel';
declare module '@curveball/kernel' {
    interface Context {
        /**
         * An object with session data.
         *
         * Anything put in this object will be stored in the session storage.
         */
        session: Record<string, any>;
        /**
         * The sessionId.
         *
         * This is automatically generated, but it's lazy. A session id and cookie
         * will only be made if something is placed in the session.
         */
        sessionId: string | null;
        /**
         * Return a CSRF token
         *
         * This token should for example be added to a form.
         */
        getCsrf(): Promise<string>;
        /**
         * Validate a CSRF token.
         *
         * If no token is provided to this function, we will check
         * ctx.request.body['csrf-token'] instead/
         *
         * If no token is found, or the token is incorrect, this will emit a
         * an exception.
         */
        validateCsrf(token?: string): void;
    }
}