How We Optimized Agent Device for Mobile App Automation, by @thymikee.bsky.social (@callstack@mastodon.social): https://www.callstack.com/blog/how-we-optimized-agent-device-for-mobile-app-automation #debugging #optimization #ai #casestudies
How We Optimized Agent Device for Mobile App Automation
Discover how we optimized Agent Device to reduce LLM token consumption by over 50% and speed up AI-driven mobile app automation.
callstack.com
Harness isn't a simple tool - it's a bunch of components working together to give the best DX for testing JS code with native modules. Maintaining all that as a solo dev isn't easy, so I tried offloading some work by using Jest's CLI to run Harness… and it worked!
We’re so excited to be co-hosting React Conf again this week! Find us at: - Callstack booth (main hall) - “React Everywhere: Bringing React Into Native Apps” by @grabbou.com, Oct 8, 2:05PM - “What’s the Framework of the React Future?” panel with @thymikee.bsky.social, Oct 8, 4:20PM 👉 conf.react.dev
React Conf 2025 | October 7-8 | Henderson, Nevada & online | Join us!
conf.react.dev
We're excited to announce React Conf speakers from some of your favorite React frameworks and build tools like @expo.dev @nextjs.org Parcel @reactrouter.com @redwoodjs.com Rock @tanstack.com
🖤❤️ RNR 338 ❤️🖤 This week: Michał Pierzchała (@thymikee.bsky.social) joins @jamon.dev and @robinheinze.dev to discuss @callstack.com's new React Native CLI and framework, the React Native Enterprise Framework. Listen now 👇 infinite.red/react-native...
React Native Radio - RNR 338 - React Native Enterprise Framework w/ Michał Pierzchała
Michał Pierzchała from Callstack joins Jamon and Robin to talk about the React Native Enterprise Framework and why big teams need it
infinite.red
This week we're heading to China 🇨🇳 At GOSIM Hangzhou 2025 @thymikee.bsky.social & @kwasniew.ski will walk through Rock - an open-source framework that helps teams skip the build step and move faster with React Native. 📍Sept 13, 14:00–17:30, Venue 9 - B05 hangzhou2025.gosim.org/schedule/nat...
Native Apps Without a Build Step – GOSIM Hangzhou 2025
React Native apps are bigger and more complex than ever. At Callstack, we've built Rock—open, modular, self-hosted, and incrementally adoptable framework for Re
hangzhou2025.gosim.org
Announcing Node-API Support for React Native callstack.com/blog/announc... #reactnative #nodejs
Announcing Node-API Support for React Native
We are bringing Node-API to React Native to simplify native module development. Learn why this ABI-stable, cross-runtime system could replace JSI and unlock faster builds, better maintainability, and ...
callstack.com
Building a React Native app for Android from default template? Then chances are you're also shipping: 🔍 unused code 🐛 debug artifacts 📦 code that’s bigger than necessary In Episode 3 of React Native Optimization in Practice, @thymikee.bsky.social shows how to fix it with R8 ➡️ youtu.be/Ud6TSlnEzCc
Your Android React Native App Is Big Because It's Missing This One Setting
YouTube video by Callstack
youtu.be
Let me paint you a picture: It’s Friday, 2pm. You’re wrapping up a PR with important bugfixes. “It’s only 2pm and I’m almost done! This is going to be a great day!” You commit, push and go grab a coffee, because you know the build will take a half an hour at least.
Episode 2 of React Native Optimization in Practice is here 🎬 This time, @thymikee.bsky.social covers another common pitfall: using web polyfills in React Native when you don’t need them. The fix? Use dedicated SDKs built for mobile. Here's why 👇 youtu.be/_Yo1kHz7h_I
You’re Loading Too Much Unnecessary Hermes Polyfills
YouTube video by Callstack
youtu.be
React Native performance tip: auto memoization cuts unnecessary re-renders, without touching your code. In the first episode of our new series, @thymikee.bsky.social shows how React Compiler makes that possible ➡️ youtu.be/28dpqPr4OC0?...
Auto Memoization in React Native? React Compiler Has You Covered
YouTube video by Callstack
youtu.be
React Native Brownfield used to be the nightmare scenario. Well, not anymore. Join me & @thymikee.bsky.social on May 27 as we share how we would create a new brownfield project today with all the best practices and our learnings. Don't miss out! bit.ly/43ipazy
Adding React Native to iOS and Android Apps Has Never Been Easier | Callstack
Learn how to easily add React Native to your iOS and Android apps with a modern brownfield setup powered by Callstack’s open-source tooling.
bit.ly
React Native in native apps used to be… messy. On May 27, we’ll show you how that’s changed. Join @thymikee.bsky.social and @atlj.dev for a walkthrough of how React Native Brownfield works today and what’s still coming with the React Native Enterprise Framework 👉 bit.ly/4ktvRpr
React Native teams: this is the CI fix you've been waiting for. Join us on May 12 for a practical webinar on 20x faster builds with no extra infra featuring @grabbou.com & @thymikee.bsky.social 🎫 streamyard.com/watch/2WbpTX...
@grabbou.com and @thymikee.bsky.social walked through the React Native Enterprise Framework—why we built it, how it works, and how it shaves CI build times from 30 minutes to seconds. Catch the full webinar and see it in action ➡️ youtu.be/yf-UZJ84-Gk
{Webinar} Why You Need React Native Enterprise Framework
YouTube video by Callstack Engineers
youtu.be
React Conf is back for 2025! Join our co-hosts, Meta and @callstack.com , October 7-8 in Henderson, Nevada or join the free livestream
Introducing React Native Legal 🧑⚖️ Zero config license generator for React Native apps. • Use in Expo apps with "react-native-legal" config plugin • Use in Community CLI projects with "legal-generate" command • Works with iOS, Android, tvOS and AndroidTV
Build once, reuse everywhere ✨ Say hello to a new framework! Built by our team to solve real-world challenges of scaling React Native in enterprise environments.
Michał Pierzchała @thymikee.bsky.social · last yr.Introducing a new React Native Framework for Enterprise apps. ✨ Built around native build reuse, incremental adoption and self-hosting at your own infra. Because the best build is no build. Hop on the wait list ⬇️
Today we're introducing a new React Native Framework, successor to React Native Community CLI. Build once, reuse everywhere! Build React Native apps in seconds, not in hours.
Michał Pierzchała @thymikee.bsky.social · last yr.Introducing a new React Native Framework for Enterprise apps. ✨ Built around native build reuse, incremental adoption and self-hosting at your own infra. Because the best build is no build. Hop on the wait list ⬇️
Introducing a new React Native Framework for Enterprise apps. ✨ Built around native build reuse, incremental adoption and self-hosting at your own infra. Because the best build is no build. Hop on the wait list ⬇️
Re.Pack 5 is finally here! ⚡️ 5x faster with Rspack 🤝 Module Federation 2 support 🪶 90% smaller config 🛠️ Reanimated, Expo Modules, & NativeWind plugins You can try it with: npx @callstack/repack-init@latest Blog post on brand new docs ✨: re-pack.dev/blog/repack-...
React Native Core Contributor Summit 2024 Recap: reactnative.dev/blog/2025/02... #ReactNative
React Native Core Contributor Summit 2024 Recap · React Native
Every year, the core contributors in the React Native Community get together with the React Native team to collaboratively shape the direction of this project.
reactnative.dev
The new version of React Native Bottom Tabs is out! 🎉 A new highly anticipated feature: Custom JavaScript Tabs! ✨ Provide your custom tab bar while leveraging native navigation underneath 🚀 Here is a demo of it in the 🦋 app! This demonstrates smooth screen transitions using native animations!
Who said you need to recompile the whole app to just update the React Native JavaScript bundle? Hold my IPA 🍺
Adding React Native to existing apps should be that simple. No node_modules, no CocoaPods, just import
🚀 Today we’re thrilled to introduce EAS Hosting — the first ever end-to-end deployment solution for universal app development. With EAS Hosting you can deploy and scale universal API routes, React websites, and more! 🌐✨ ✍️ @kitten.sh 📽️ @kadi.bsky.social expo.dev/blog/expo-an...
EAS Hosting (Preview): Host Expo server code in the cloud with EAS
Introducing EAS Hosting: the first ever end-to-end deployment solution for universal app development.
expo.dev
Going live this Thursday! 🎥 I’ll be chatting with @grabbou.com and @thymikee.bsky.social about some open-source projects we’ve been working on at Callstack. 📅 Thu, Dec 5 🕕 6 PM CET | 12 PM EST | 9 AM PST Catch us here: 🎥 www.youtube.com/watch?v=H5ya... Come hang out and ask us anything! 🙌
youtube.com
RN 0.77 enters the release candidate phase! 🥳 And it includes 17 commits from our engineers: @kwasniew.ski, @robpasinski.bsky.social and @tell_me_mur 👏
Michał Pierzchała @thymikee.bsky.social · 2y agoReact Native 0.77 RC.0 is here 🎉 including: - Swift template for iOS - Progress on native API stability - Better tvOS integration - Improved Animated performance - React DevTools v6 and a lot more! full changelog: github.com/facebook/rea...