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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.23

Better useAppState Error Messages

What

Improved error messages for incorrect usage of the useAppState hook.

Details
  • Combined error for both useAppState and useSetAppState: "useAppState/useSetAppState cannot be called outside of an <AppStateProvider />"
  • New error when selector returns the whole state: "Your selector in useAppState(...) returned the original state, which is not allowed. You must instead return a property for optimised rendering."
Evidence

Error handling at line 476661 (contains "useAppState/useSetAppState cannot be called outside", "Your selector in \useAppState("`)

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.23 →