React Native: Locking Down the C++ API Surface
The bulk of today's activity is a coordinated push to classify core C++ modules under React Native's new three-tier stable API visibility model, alongside a pair of performance-focused cleanups to native map and matrix handling.
Duration: PT2M53S
Episode overview
This episode is a short developer briefing from React Native.
It explains recent repository work in plain language.
- Show: React Native
- Published: 2026-09-01T13:06:00Z
- Audio duration: PT2M53S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Good morning. It's September 1st, 2026.
The dominant story in today's activity is React Native's ongoing effort to lock down its internal C++ API surface. At least five separate changes touch the same system: the three-tier stable API visibility model that governs which headers external consumers can safely include.
Jakub Piasecki covered both the JS error handler, in commit 4f003c4, and dev tools runtime settings, in commit a862ba7, adding guard headers that classify them as "for frameworks" or private targets. He extended the same treatment to UI Manager in PR 58273 and the animated renderer in PR 58269. The pattern is…
A second theme is native performance work from javache. PR 58275 removes unnecessary allocations during matrix decomposition on view transforms, and PR 58274 reduces JNI allocations when importing native maps and arrays by caching pointers instead of copying keys on every call. Both are internal, non-behavioral…
Elsewhere, PR 58266 adds font feature settings support and unifies font feature resolution logic across Android and iOS into shared C++, fixing a bug where Android wasn't checking that property at all. PR 58264 preserves module and method names when…
What to…
Nearby episodes from React Native
- Babel Preset Correctness Sweep and C++ API Guard Rollout
- Weekly Recap - Hardening the Edges: Security, Standards Compliance, and Stable APIs
- Web Standards Hardening Sprint
- Cleaning Up After the Old Architecture
- Locking Down the C++ API Surface
- Locking Down the C++ and TypeScript Boundaries
- Closing the Scheduler's Race Conditions
- Locking Down the C++ API and Retiring SafeAreaView