facebook
[React 19] Need suggestion on upgrade.
Summary
We are upgrading the react in our project and we see in the documentation the support for the defaultprops and proptypes is removed.
We are using the jsx and migrating to typescript is not possible at the moment as our project is fairly big. Any suggestion on how to do defaultprop and proptype check.
You can use defaultprops and proptypes on your component or you can try JSDoc comments
Here is something I came up with, along with some help form my AI agent. This is the short version - if you want the long one, let me know:
- Use ES6 default parameters for setting default values in your functional components.
- Continue using prop-types for runtime validation of props to prevent passing incorrect data types.
- Plan for a gradual migration to TypeScript, as that will ultimately offer the strongest and most scalable type safety long-term.
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You can use defaultProps and PropTypes with function components by utilizing React.memo and prop-types libraries
@lakshman0369 see https://github.com/facebook/react/issues/28992#issuecomment-2862341940
@NikolayFrantsev created a babale plugin that helps to reinstate propTypes and you can migrate defaultProps using npx codemod@latest react/19/replace-default-props
This issue has been automatically marked as stale. If this issue is still affecting you, please leave any comment (for example, "bump"), and we'll keep it open. We are sorry that we haven't been able to prioritize it yet. If you have any new additional information, please include it with your comment!
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