A roundup of React ecosystem news including TanStack Form v2 alpha's rebuilt validation pipeline, React Native 0.87's Strict TypeScript API and experimental Swift Package Manager support, Yelp's multi-year migration of 1.4M lines from Flow to TypeScript, the Next.js team (now with Dan Abramov and Pete Hunt) hosting a Reddit AMA, Biome 2.5.8's new React Compiler lint rule, Next.js 16.3's instant navigation testing helper, a talk on treating RSC as a composable primitive, an experimental type-level approach to referential stability from a Preact core team member, plus new releases including GTKX 1.0/1.1, kbar 1.0, React Hook Form 7.85.0, Motion 13.1, Next.js 16.3.1, and Sonner 2.0.8.
Questions this post answers
What changed in React Native 0.87?
React Native 0.87's public JavaScript API is now the Strict TypeScript API, with types generated directly from React Native's source code. The release also bumps Metro to a leaner v0.87 and adds experimental Swift Package Manager support for iOS. Track React Native release notes like this on daily.dev before upgrading your mobile app.
What was fixed in Next.js 16.3.1?
Next.js 16.3.1 is a patch release cleaning up issues from the 16.3 release, including repeated prefetch loops, cache entries being discarded too eagerly after a tag revalidation, and the headers() function returning a stale view of the request. It shipped shortly after the original 16.3 release. Developers chasing down Next.js caching bugs can follow patch releases like this on daily.dev.
Why did Yelp migrate its codebase from Flow to TypeScript?
Yelp originally picked Flow in 2017 because it handled React better than TypeScript did at the time, but the company later reversed that decision, spending years converting hundreds of packages and 1.4 million lines of code while running both typecheckers simultaneously during the transition. Teams weighing a large-scale typechecker migration can compare real-world experiences like this on daily.dev.