Discussion - Topic: React JS

This week's topic: React JS

Discussion resources to help guide the conversation will be posted below a few days before the meetup.

Zoom link will be added about 5 min before the event starts.

As described in Thoughtworks Technology Radar Vol. #34.

React has been our default choice for JavaScript UI development since 2016, but with the stable release of React Compiler coming last October (as part of React 19), it’s worth revisiting. There are a number of reasons this feature is notable. By handling memoization at build time, for example, it makes manual useMemo and useCallback largely unnecessary, though the team recommends keeping them as escape hatches when precise control over effect dependencies is required. Battle-tested at Meta and supported by Expo SDK 54, Vite and Next.js, the compiler also removes a category of performance boilerplate that has long been a cost of working at scale with React. React 19 also introduces Actions and hooks such as useActionState and useOptimistic, which simplify form handling and data mutations without relying on external libraries. The launch of the React Foundation under the Linux Foundation in 2025 — with Amazon, Expo, Callstack, Microsoft, Software Mansion and Vercel joining Meta — further strengthens the library’s long-term stability and addresses a concern cautious teams have historically cited when considering adoption.

Discussion Resources :

React Tutorial for Beginners—with React 19 By Robin Böhm
https://reactjs.de/en/articles/react-tutorial-for-beginners/

React v19 By The React Team
https://react.dev/blog/2024/12/05/react-19

React 19’s useOptimistic: Everything You Need to Know By Jack Herrington
https://www.youtube.com/watch?v=QWVr7uDyBXE

React 19: useActionState By Ryan Toronto
https://www.youtube.com/watch?v=p_wnN5VR9Ok

React Compiler v1.0 By Lauren Tan, Joe Savona, and Mofei Zhang
https://react.dev/blog/2025/10/07/react-compiler-1

React Conf 2025 Day 1 By Joe Savona, Mofei Zhang, Jack Pope, Lauren Tan, and Seth Webster
https://www.youtube.com/watch?t=1067s&v=zyVRg2QR6LA

Expo SDK 54 By Alan Hughes and Brent Vatne
https://expo.dev/changelog/sdk-54

useOptimistic Won’t Save You By Colum Kelly
https://www.columkelly.com/blog/use-optimistic

Introducing the React Foundation By Seth Webster, Matt Carroll, Joe Savona, and Sophie Alpert
https://react.dev/blog/2025/10/07/introducing-the-react-foundation

Linux Foundation Announces Intent to Launch the React Foundation By The Linux Foundation
https://www.linuxfoundation.org/press/linux-foundation-announces-intent-to-launch-the-react-foundation