@mdj_dev

React Native at @callstackio — OSS: RN Testing Library — team console.log

 Wroclaw, Poland
mdj.hashnode.dev/
Joined April 2020
  • Tweets1.9K
  • Following146
  • Followers3.3K
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Maciej Jastrzębski retweeted
Oskar
@o_kwasniewskiOct 1
Introducing e2e The agentic testing framework for any app ~/ npx e2e init → Fully Open Source → Mix deterministic and agentic APIs → Supports web, mobile, and more → Bring your own agent and infrastructure → Run locally or in CI tester.army/e2e
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This Week In React 299 ⚛️ - Panda - Vinext - Next.js - Preact - Design Systems - RTK 📱 - Variable Font - Activity Result - Lynx - Lucent - macOS - Plain Text - RNav - Angular Native 🍿 Read: thisweekinreact.com/newslett… ✍️ @jaworek3211 & I
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Maciej Jastrzębski retweeted
Thiago Brezinski
@thiagobrezSep 21
Announcing react-native-arrangement-view 0.1.0 ✨ Easily adapt your React Native app to foldables, arrange views between screens, and fetch hinge state Not prod ready yet, first on iPhone Duo , Android coming next release 🔜 Contributions welcome!
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Maciej Jastrzębski retweeted
Davyd NRB@tell_me_murSep 19
Getting ready for foldables ⚡️ 𝗿𝗲𝗮𝗰𝘁-𝗻𝗮𝘁𝗶𝘃𝗲-𝗯𝗼𝘁𝘁𝗼𝗺-𝘁𝗮𝗯𝘀 by @callstack already supports 𝗶𝗣𝗵𝗼𝗻𝗲 𝗗𝘂𝗼 natively 🔗 oss.callstack.com/react-nati…
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Maciej Jastrzębski retweeted
Davyd NRB@tell_me_murSep 19
By the way, here’s how 𝚂𝚊𝚏𝚎 𝙰𝚛𝚎𝚊 𝙸𝚗𝚜𝚎𝚝𝚜 look on the 𝗶𝗣𝗵𝗼𝗻𝗲 𝗗𝘂𝗼 📱 { "𝚋𝚘𝚝𝚝𝚘𝚖": 𝟹𝟺, "𝚕𝚎𝚏𝚝": 𝟶, "𝗿𝗶𝗴𝗵𝘁": 𝟴𝟰, "𝚝𝚘𝚙": 𝟶 }
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Maciej Jastrzębski retweeted
Michał Pierzchała
@thymikeeSep 18
Interactions with the simulator that are under 16 ms provided by Appduct, a new library by @ChmalSzymon. It’s still WIP, give it a star ⭐️ github.com/callstackincubato…

GitHub - callstackincubator/appduct: Your agent stops tapping. It calls your app.

Your agent stops tapping. It calls your app. Contribute to callstackincubator/appduct development by creating an account on GitHub.

github.com
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Maciej Jastrzębski retweeted
Mike
@grabbouSep 17
jevil is in the details 😈 built a quick POC running agent-device with jev and learned a ton. check the source code or read a short blog post ⬇️
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Day 1 in a nutshell: 500 people, 16 speakers, and hectoliters of specialty coffee. Thank you to @grabbou, @thymikee, @kentcdodds, @nickwm, @jakubkuzimski, @davidmokos_, @dom_sipowicz, @piotrkarwatka, @anisha_malde, Kourtney Meiss, Zuzanna Skoczylas, Anjaneya Sastry Kappagantu, @artus9033, @LeSiOO, @davidbudac, and @TejasKumar_ for guiding us through the day. Awesome work.
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This Week In React 297 ⚛️ - DevTools - Motion - Apollo - React Router - React Hook Form - shadcn lint 📱 - Shopify - Expo 58 beta - ExecuTorch - Screenmap - Lynx - Stim - Voltra 🍿 Read: thisweekinreact.com/newslett… ✍️ @jaworek3211 & I
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Maciej Jastrzębski retweeted
Tomasz Sapeta 𝝠
@tsapetaSep 16
Expo Modules 2.0 is what I spent the most time on this cycle, and what I'm most excited about. Annotate what you want exposed instead of describing your module to the framework. Less code to write, less for an agent to get wrong, and existing modules got faster too 🔥
Expo
@expoSep 15
🙌 𝝠 Expo SDK 58 beta is out. Built for iOS 27 on React Native 0.88 RC, with 𝚎𝚡𝚙𝚘-𝚊𝚙𝚙-𝚒𝚗𝚝𝚎𝚗𝚝𝚜 for Siri, @𝚎𝚡𝚙𝚘/𝚊𝚐𝚎𝚗𝚝-𝚌𝚕𝚒 for coding agents, and Expo Modules 2.0 in beta....and tons more. 𝚗𝚙𝚡 𝚎𝚡𝚙𝚘 𝚒𝚗𝚜𝚝𝚊𝚕𝚕 𝚎𝚡𝚙𝚘@𝚗𝚎𝚡𝚝 --𝚏𝚒𝚡 Tons of delicious details in the changelog: expo.dev/changelog/sdk-58-be…

Expo SDK 58 Beta is now available — Expo changelog

Check out new updates and improvements to Expo and EAS from the Expo team.

expo.dev
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Maciej Jastrzębski retweeted
Marc
@mrousavySep 13
Replying to @jordwalke
I got a proof of concept of that running, built on Nitro together with @grabbou.
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This Week In React 295 ⚛️ - StyleX - browser() - Next.js - Compiler in Vite/Bun - Astryx - Formisch - React Aria - TanStack 📱 - C++ API - Margelo+Callstack - Observe - Reanimated - Teleport - Nitro - Screen Transition 🍿 Read thisweekinreact.com/newslett… ✍️ @jaworek3211 & I
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Maciej Jastrzębski retweeted
Michał Pierzchała
@thymikeeAug 18
Replying to @thymikee @swmansion
Curious how @agent_device compares to alternatives in reliability (tasks completed)?
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Maciej Jastrzębski retweeted
Mike
@grabbouAug 7
We've spent 10 years migrating companies to React Native. Earlier guides focused on traditional brownfield migrations. AI makes greenfield and hybrid paths more realistic. Agents can inspect native behavior and recreate existing flows. In this guide, we break down how it works ⬇️
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This Week In React 293 ⚛️ - Next.js - TanStack Table / Charts - browser() - React Aria - MobX - SWR - WebMCP - R3F 📱 - PlainText - VisionCamera - Gesture Handler - Expo Simulators - Firebase - Voltra 🍿 Read: thisweekinreact.com/newslett… ✍️ @kowalskijakub20 @KatPodm @swmansion
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Maciej Jastrzębski retweeted
Davyd NRB@tell_me_murJul 27
🎨 𝚋𝚊𝚌𝚔𝚐𝚛𝚘𝚞𝚗𝚍𝙸𝚖𝚊𝚐𝚎 is officially stable in #ReactNative 𝟬.𝟴𝟳.𝘅! 𝗟𝗶𝗻𝗲𝗮𝗿 and 𝗿𝗮𝗱𝗶𝗮𝗹 gradients now work out of the box with zero third-party dependencies. Goodbye 𝚛𝚎𝚊𝚌𝚝-𝚗𝚊𝚝𝚒𝚟𝚎-𝚕𝚒𝚗𝚎𝚊𝚛-𝚐𝚛𝚊𝚍𝚒𝚎𝚗𝚝 👋🚀
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Maciej Jastrzębski retweeted
Mike
@grabbouJul 29
Join us in Warsaw!
Edu@teddydroid07Jul 29
Replying to @CallStack
@Callstack is hosting Agent Conf 2026 in Warsaw, Sept 17-18. Two days on vibe coding, agentic engineering, multi-agent systems, and adoption stories. Speakers from Cursor, Amazon, eBay, Meta, Allegro & more. 20% off with CK20: ti.to/agent-conf/agent-conf-… #AgentConf2026
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Maciej Jastrzębski retweeted
Michał Pierzchała
@thymikeeJul 21
react native is dead
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👀 New HTTP QUERY method Similar to GET, with a body allowed Safe, idempotent, cacheable There are also headers to: - give the query its own URI (Location) to query again without body - give the response its own URI (Content-Location) to get the same response again
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This Week In React 287 ⚛️ - Fragment ref - React Compiler - StyleX - React Router - cnfast - Base UI - Remotion - React Aria 📱 - Reanimated - Widgets - VisionCamera - Test Renderer - Worklets - Legent List - Metro 🍿 Read/subscribe: thisweekinreact.com/newslett… ✍️ @jaworek3211 & I
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