React is turning 19!
summary
react 19 reaches beta and delivers concrete pieces: a Babel plugin plus a compiler core that react compiler uses to prune and memoize, server components that render noninteractive UI on the server to shrink client JS, and new form primitives like form actions and use action State that remove boilerplate and give built‑in pending/error flows. refs become props, metadata hoists to head with automatic preload/prefetch ordering, codemods exist for removed APIs, and the recommended stepwise upgrade is via 18.3 before attempting production use.
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chapters (9)
- 0:00React 19 excitement
- 1:56Introduction
- 3:18React 19 compiler
- 5:30Server components
- 8:23Form actions & state
- 11:53Suspense & resource loading
- 12:34React 19 APIs
- 15:46Upgrading to React 19
- 17:10Migration tips
