안녕하세요 재남님!Typescript 적용 중에 계속 안되는 부분이 있어서 질문드려요!<img src="https://cdn.inflearn.com/public/files/posts/8551ea11-1962-4788-860e-2a01b08e4e71/스크린샷 2022-09-02 오전 12.07.30.png" alt="스크린샷 2022-09-02 오전 12.07.30.png" title="스크린샷 2022-09-02 오전 12.07.30.png">setQueryData에 2번째 인자인 old에 대해서 타입 지정 중인데 안되는 이유가 궁금합니다!

<a target="_blank" rel="noopener noreferrer nofollow" href="https://github.com/roy-jung/api-practice/blob/ts-ch6/client/components/MsgList.tsx">https://github.com/roy-jung/api-practice/blob/ts-ch6/client/components/MsgList.tsx</a><a target="_blank" rel="noopener noreferrer nofollow" href="https://github.com/roy-jung/api-practice/blob/eb6e20b71b1d3970c93f9ec0ed94b770556d7190/client/types.ts#L16">https://github.com/roy-jung/api-practice/blob/eb6e20b71b1d3970c93f9ec0ed94b770556d7190/client/types.ts#L16</a>타입정의가 필요합니다.

인프런 커뮤니티 질문&답변

Typescript 질문드려요!