type MessageInfo = {
    info: {
        role: string;
        [key: string]: unknown;
    };
    parts: Array<{
        type: string;
        text?: string;
        output?: string;
        tool?: string;
        [key: string]: unknown;
    }>;
};
export declare function createMessageTransformHook(): (_input: Record<string, unknown>, output: {
    messages: MessageInfo[];
}) => Promise<void>;
export {};