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Improve custom Hook debugging with useDebugValue

Blog post from LogRocket

Post Details
Company
Date Published
Author
Sebastian Weber
Word Count
1,322
Language
-
Hacker News Points
-
Summary

The useDebugValue Hook is a lesser-known but valuable tool in React that enhances the debugging experience for custom Hooks by providing more detailed information in the React DevTools. It allows developers to add descriptive labels and formatted data to the DevTools output, improving the readability and traceability of state variables and Hook calls. While useDebugValue can significantly aid in development by offering better insights than the default console logs, it should be used cautiously in production due to potential performance impacts. The Hook cannot be used conditionally due to the Rules of Hooks, which restricts its application to the top level of a functional component or custom Hook. Despite its limitations, useDebugValue offers an alternative to traditional debugging methods like console logs and breakpoints, making it useful during the development phase but recommended to be removed before deploying the code.