react-19-3-migration-recipe

Run all React 19.3 adoption codemods in sequence.

React 19.3 has no breaking changes, so this recipe does not fix anything that stops working. It moves code from experimental names and pre-19.3 workarounds onto the stable APIs.

Usage

bash
Copy
npx codemod react-19-3-migration-recipe --target <path>

This recipe applies the following codemods:

1. react-19-3-unprefix-stable-apis — rename unstable_ViewTransition, unstable_addTransitionType, unstable_Activity, and experimental_useEffectEvent to their stable names
2. react-19-remove-context-provider — replace Context.Provider with Context
3. react-19-3-use-browser — replace the mounted-state pattern for browser-only components with use(browser())
4. react-19-3-fragment-ref-wrappers — replace display: contents wrapper elements that only hold a ref with Fragment refs