Update your React code for React 19.
Guides updates to React source files so users can replace older APIs and component patterns for React 19.
When to use it
Use when migrating React source files to React 19.
It changes how the agent migrates React project source files by supplying replacement patterns and preservation rules.
What you provide
The reference concerns React applications migrating to React 19 and its source API requirements.
No additional actions listed.