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ling1726 avatar ling1726 commented on August 21, 2024

This was not the case before 1.3.0: https://codesandbox.io/s/currying-resonance-73njnm

Before 1.3.0 there were still two renders for subscribers, but the correct value was already available in the first render

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dai-shi avatar dai-shi commented on August 21, 2024

Yeah, it's a known limitation in v1.3. To my knowledge, there's no way to resolve this in userland without breaking things in concurrent rendering.

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ling1726 avatar ling1726 commented on August 21, 2024

Is it because of writing to refs at render time ? are you aware of any work in React to help make this safer ?

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dai-shi avatar dai-shi commented on August 21, 2024

It's because we use useLayoutEffect for propagation.
Some references:

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