NewPost.client.js

export default function NewPost() {
  const navigate = useNavigate();
  const invalidateCache = useCacheInvalidate();
  // ...
  /** @type React.FormEventHandler */
  const handleSubmit = async (e) => {
    e.preventDefault();
    await createPost({title, content});
    invalidateCache('/posts');
    navigate('/posts');
  };
  // ...
}