React Native at @callstackio — OSS: RN Testing Library — team console.log
Wroclaw, Poland
Joined April 2020
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React Native Testing Library v14.1.0 is out 🎉
Changes:
🔹 userEvent.pullToRefresh()
🔹 userEvent.accessibilityAction()
🔹fireEvent.layout()
🔹eventDiagnostics option: warns when an event calls no handler
... and RN 0.88 & React 19.3 support ✅
GH Release:
github.com/callstack/react-n…
Rect Native Testing Library recently passed 5M weekly downloads on npm 🎉
At the same time v14 already makes up over 30% of them and keeps growing 🚀
Working on some new features, more soon... 👀
Maciej Jastrzębski retweeted
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
Maciej Jastrzębski retweeted
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
RN Plain Text now runs visual regression tests every night to keep the output pixel-perfect-stable 🔬
Kudos to @trozee_dev for cooking this!
Pixel-perfect UI should not be vibe-coded
Together with @mdj_dev we added visual regression testing support to RN PlainText 🎉
The new VRT suite captures and pixel-compares nearly 200 Android and iOS specimens in CI every night 🌚
More in comments 👇
Plot twist: this is how Android foldables finally get proper layout support, thanks to the iPhone Duo launch and @thiagobrez 😄
I'm finalizing Android support react-native-arrangement-view 🤖
Docs will include comparisons between iOS and Android in all poses and orientations, which I think it's pretty nice
Screenshots taken with @agent_device obviously
RN PlainText 0.9 is out ✨
Even faster rendering, even better compatibility, and the big one: a drop-in replacement for RN <Text>.
Want to try it in your app? Just change one import and feel the perf difference!
Also new: web-style hyphens="auto" and lang="de" props for proper word hyphenation on iOS and Android. Kudos to @markuswendorf 🙌
The road to 1.0 is short now! 🛣️
Maciej Jastrzębski retweeted
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!
Maciej Jastrzębski retweeted
Getting ready for foldables ⚡️
𝗿𝗲𝗮𝗰𝘁-𝗻𝗮𝘁𝗶𝘃𝗲-𝗯𝗼𝘁𝘁𝗼𝗺-𝘁𝗮𝗯𝘀 by @callstack already supports 𝗶𝗣𝗵𝗼𝗻𝗲 𝗗𝘂𝗼 natively
🔗 oss.callstack.com/react-nati…
If LLMs' answer style is based on users' preferences during post-training, then did users prefer em dashes in their sentences? 🤔
Maciej Jastrzębski retweeted
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…
Free Apex till the end of the weekend!
On the first day of @AgentConf we opened free access to our model Apex to all attendees.
Apex achieves SOTA in React Native and Terra Max / Sol Medium in Artificial Intelligence Index.
Enjoy unlimited tokens on us til the end of the weekend and show us what’ve shipped!
Mutual Amplification vs Cognitive Surrender is the key internal struggle for devs with AI. Could not agree more with @gnikolaropoulos at @AgentConf
