Krystof Woldrich

Old friends, new friends, open source legends. With @woldri.ch, @mael.dev and @ives.sh

🥳 We raised some money. Expo is the best it's ever been, and this round of funding will help us get a lot better. With this money we can go faster on the things that matter: faster builds, smoother native integrations, and better e-2-e DX. Charlie wrote about what's next: expo.dev/blog/what-ex...

Released a massive update of my coffee timer app, Single Origin. I wanted to brew the roaster-created recipes available on the Fellow Aiden & xBloom, so I built an app that guides you through every pour, agitation, etc. Since it's built with Expo, it runs on iOS, WatchOS, Android, & Web. 👇

Can't imagine doing a large ref without knip.dev, agents often forget about dead code.

`If this is intentional, prepend VarName with an underscore.` This is a dangerous recommendation these days, I've noticed agents tend to add _ without intention instead of removing the dead code.

switching from Cursor and iTerm to Zed and Ghostty feels like joining the dark side

This setup is a must have for large apps.

Can AI build production-ready mobile apps? 📱 We’re stoked to have David Mokos at our next meetup! David started SteerCode, which recently joined @expo.dev to make Expo the AI-first mobile app framework He’ll show us how Expo Agent is bringing agentic development to React Native 💛

quality of life feature in @expo.dev 55, iOS dev builds using expo-dev-client will discover devservers on the local network automatically ✨📡 qr codes are finally fully optional now 😄

Big release for @guild.host is out! Only 40,000+ lines changed 🤯 Featuring full Dark Mode support and brand new Guild Membership & Event Registration forms with full Approval functionality for folks joining 😉 Really happy with the results! So much more to come 🚀

Although I barely write code now, I still run commit and push handful of times, since 15+ tool calls to do it by an agent seems like a waste to me.

Expo SDK 55 is out 😅 RN 0.83, React 19.2 & a long list of things that make your app faster, smaller, & easier to build ♦ Hermes bytecode diffing cuts update sizes by ~75% ♦ Brownfield support gets a serious upgrade ♦ MCP now queries EAS + TestFlight crashes Full changelog: expo.dev/changelog/sd...

Folks are downloading react-native on npm over 4 million times a week, that 100% growth from last React Conf!

The iOS queue times for Free plan users on @expo.dev were around 4 hours at this time last week. We increased our Mac capacity today. We're seeing <10 min queue times right now. ⚡ Subscribers are seeing 0 min queue times.

Great RN meetup today! Thank you @react-prague.bsky.social

🚀 Expo Router v6 is here! @bacon.bsky.social and his team bring more native iOS magic into React: ◆ <Link.Preview> & <Link.Menu> for previews + context menus ◆ More server features for advanced web ◆ React-first APIs that just work™️ Details in the blog: expo.dev/blog/expo-ro...

Say hi to @tkdodo.eu. He's showing how Sentry used Knip to spot dead code and keep their frontend tidy. 🧹 👉 guild.host/events/the-s...

The first Expo SDK release I'm part of is out, SDK 54 is published, give it a try! Many exciting new features and QoL improvements.

Had a great time at the meetup, a fantastic group of people! If you’re in northern Germany, I definitely recommend stopping by.

Yesterday was my first day on the @expo.dev Dev Tools team. Super excited to be here and start building cool things! 🚀

Debugging in React Native got easier today. We now have an official integration with @sentry.io so you can see errors and replays directly in your EAS Deployments. No more digging through logs or guessing at app state. 📖 expo.dev/blog/diagnos...

If you are a React Native dev exploring Lynx React, github.com/getsentry/se... might come in handy.

Getting feedback from users was never easier. Get the feedback right when the app errors out. I’m curious what do you think about the new @sentry.io RN Feedback Widget. docs.sentry.io/platforms/re...

Exciting new alpha release of Sentry RN SDK. Brand new simple initialization for Android and iOS to capture more errors with less setup. github.com/getsentry/se...

Spot the difference, the same bundle, the same frame, same bundle line and col.

Perfect end to my winter holidays. A new release of my @vscode.dev extension which creates current/next PR markdown link right in the editor. github.com/krystofwoldr...

I know Maestro purposely avoided adding retry in the past, as it "should not be needed". I’m happy to see it github.com/mobile-dev-i...

The best build is no build

Are you in Prague in the afternoon? Come talk React/React Native at @react-prague.bsky.social I’ll share the latest updates about @sentry.io error monitoring and session replay on RN.

Just arrived to London for @reactnativelondon.co.uk Looking forward to the UK community and talks. Stop by at the @sentry.io booth tomorrow!

Not going to lie, after seeing the notifications I feel like I should start posting…