Docs now explain more cases where compiler adoption should be incremental.
TypeScript updates in 2026-w19
Production build fixes target route generation and CSS ordering.
The beta includes narrower inference for common conditional patterns.
Security release updates bundled dependencies and runtime patches.
Patched high‑severity vulnerabilities including DoS via server components, middleware/proxy bypasses, SSRF in WebSocket upgrades, and cache poisoning in React Server Component responses.
Address multiple high, moderate, and low severity security advisories (DoS, SSRF, XSS, cache poisoning, and middleware proxy bypass)
Client generation handles workspace output paths more consistently.
Add experimental node:ffi module for loading native libraries (requires --experimental-ffi flag and appropriate permission; API is unsafe).
Patched multiple high‑severity security vulnerabilities (DoS, SSRF, proxy bypass, cache poisoning, XSS) across Server Components, Middleware, and Image Optimization.
Patched high‑severity vulnerabilities such as denial‑of‑service, proxy bypass, SSRF, and cache exhaustion across server components, middleware, and caching layers.
Enhanced type safety (hardening) for React Server Components.
Strengthen type safety for React Server Components.
Hardens TypeScript types for React Server Components.
Temporal API is now enabled by default, providing a modern date‑time API;