Category · 5 posts
Framework releases, migrations and what changed in the tools we ship with.
React 19.3 makes View Transitions and Fragment refs stable, adds the browser() API for client-only components, supports Trusted Types and lets Server Components render Context. What each feature does, simple examples and when to use them.
Vite 8 replaces esbuild and Rollup with Rolldown, one Rust-based bundler, for much faster builds. What changed, the breaking changes that affect real projects (rolldownOptions, manualChunks, CommonJS interop, Lightning CSS) and a safe upgrade path.
Next.js 16.4 recommends Cache Components for every app, adds `next upgrade --agent`, new navigation and prefetch controls, ensureStatic checks, a smaller Turbopack cache and React 19.3. What each feature does and which ones to adopt now.
Next.js 15 stopped receiving security fixes on October 21, 2026. What end of support means, the Next.js 16 breaking changes that actually bite, a step-by-step upgrade with the official codemod, and a checklist to ship it without surprises.
How to estimate what an AI feature will cost before you build it: token maths with worked examples, the hidden costs teams miss, caching and model routing, and a clear framework for when self-hosting an open model beats paying per token.
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