Component re-renders even no snapshot key is accessed

[xuxucode]

Bug Description

Doc at https://github.com/pmndrs/valtio?tab=readme-ov-file#react-via-usesnapshot mentioned that:

The component will only re-render when the parts of the state you access have changed, it is render-optimized.

But in below example, when snap is an unused variable, i.e. no part of the state is accessed, the Counter component still re-renders:

const state = proxy({ count: 0, text: "hello" });

// This will re-render on `state.count` or `state.text` change
function Counter() {
  // `snap` is an unused variable
  const snap = useSnapshot(state);
  return <div>counter</div>;
}

Is that expected?

Reproduction Link

https://codesandbox.io/p/sandbox/valtio-countdown-to-do-list-forked-4zwh8m

[dai-shi]

Yes.

[dai-shi]

Hmm, I wasn't able to find the old discussion. There must be something we discussed previously.

[xuxucode]

Thanks, I will try to look for it.

[dai-shi]

Found it: #209