TMiR 2025-07: Vercel shakeups, new React Compiler docs

New Releases
- RN Reanimated v4
- RN Ignite toolkit v11
Main Content
- Compiler docs are merged! (live docs, and config API)
  - Expo docs say it’s “on hold”, but Evan Bacon says Expo 54 may enable the Compiler by default
  - Oh no — more function directives , “use memo” and “use no memo”
  - DIRECTIVES
  - Good thread on some history
  - Some tech discussion on the complexities of making React Compiler work with Oxlint
  - Directive prologues and JavaScript dark matter
- Node API Support for React Native
- Vercel shaking things up
- Ryan Carniato’s “react and signals”
- React Native Unistyles 3.0 Released
- React Router and RSCs: The Path Forward
- Parcel writeup for Server Components
- WIP Vite RSC plugin support
⚡ Lightning round ⚡
- Corbin’s “History of React Through Code” deep dive
- TkDodo’s thoughts on when useCallback is useless
- eslint-config-prettier compromised as part of an NPM supply chain attack
- Expo Router demo by Evan Bacon AI + RSCs + Expo Router
- Some tech details on how Meta serves React pages
- Nitro Image library for React Native
- A very hacky way to test RSC components
- A good technical dive into improving INP in a Next app
- Extra CSS Properties in React Native
- Chrome 137 adds if support in CSS
- React Devtools for Firefox may not get updated due to review restrictions
- Both oxlint and biome are investigating typed lint rule support (Biome v2, tsgolint)
- Remix v3 dev branch containing support packages
- React Native Wallet
- Deno v Oracle update
- “Content independence day” from Cloudflare (they’re blocking AI crawlers)
- Some updated Static Hermes perf numbers release available “soon”, being tested internally at Meta
- State of HTML Survey is open
Conferences (React, Javascript)
- Big Sky Dev Con Aug 2 Bozeman, MT, USA
- Kansas City Developer Conference Aug 13-14 Kansas City, KS, USA
- React Universe Conf Sept 2-4, 2025. Wrocław, Poland
- WaysConf Sept 16-17
- CascadiaJS Sept 18-19 Seattle, WA, USA
- Squiggle Conf Sept 17-18 Boston, MA, USA
- React Conf is back, Oct 7-8
- Remix Jam Oct 10 Toronto, Canada

(00:00) - This Month in React July Episode - SM
(01:17) - New Releases
(01:20) - [RN Reanimated v4](https://blog.swmansion.com/reanimated-4-stable-release-the-future-of-react-native-animations-ba68210c3713)
(08:46) - [RN Ignite toolkit v11](https://shift.infinite.red/announcing-ignite-11-bison-f2802a85f94d)
(10:18) - Main Content
(10:21) - [Compiler docs are merged!](https://github.com/reactjs/react.dev/pull/7868) ([live docs](https://react.dev/learn/react-compiler/introduction), and [config API](https://react.dev/reference/react-compiler/configuration))
(11:42) - [Expo docs](https://docs.expo.dev/guides/react-compiler/) say it’s “on hold”, but Evan Bacon says [Expo 54 may enable the Compiler by default](https://x.com/Baconbrix/status/1949714155482841094)
(12:45) - Oh no — [more function directives](https://react.dev/learn/react-compiler/incremental-adoption) , “use memo” and “use no memo”
(12:51) - [DIRECTIVES](https://macwright.com/2025/04/29/directive-prologues-and-javascript-dark-matter)
(13:13) - [Good thread on some history](https://x.com/en_JS/status/1948502925468467369)
(14:19) - Some tech discussion on [the complexities of making React Compiler work with Oxlint](https://github.com/oxc-project/oxc/issues/10048)
(15:41) - [Directive prologues and JavaScript dark matter](https://macwright.com/2025/04/29/directive-prologues-and-javascript-dark-matter)...

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