Conditionally deriving state is allowed #8033
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rickhanlonii
approved these changes
Oct 1, 2025
Size changes📦 Next.js Bundle Analysis for react-devThis analysis was generated by the Next.js Bundle Analysis action. 🤖 This PR introduced no changes to the JavaScript bundle! 🙌 |
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These docs are misleading. We do have an official API that relies on setting state in render. If we don't like it, we should come up with a more first-class API for this occasionally legit pattern. But the API is legit and supported.
This clarifies the docs to resolve the contradiction. Only unconditional setState in render is definitely disallowed. Conditional is more nuanced, as noted.