useDebugValue: Label Your Custom Hooks in DevTools
useDebugValue attaches a readable label to your custom hooks in React DevTools. Instead of just seeing raw state, you can display a meaningful string like "Online". The footgun is overusing it; reserve it for complex, shared library hooks.
useDebugValue labels your custom hooks in React DevTools, replacing raw state with human-readable strings. For a `useOnlineStatus` hook, instead of seeing just `true`, DevTools can show `OnlineStatus: "Online"`. It also supports a lazy formatting function for performance. The main footgun is overusing it; it's most valuable for complex, shared library hooks, not for every simple hook in your application, where it just adds noise.
Read the original → react.dev
- #react
- #hooks
- #debugging
- #devtools
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