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Krystof Woldrich

@woldri.ch
845 followers 89 following 31 posts

Working on Dev Tools @expo.dev Previously maintaining React Native SDK @sentry.io

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Reposted by Krystof Woldrich
Dominik 🔮 @tkdodo.eu · 13/06/2026
Old friends, new friends, open source legends. With @woldri.ch, @mael.dev and @ives.sh
🤳 Krystof & me🤳 Mael & me🤳 Ives & me
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Expo @expo.dev · 16/04/2026
🥳 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...
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Reposted by Krystof Woldrich
Jon Samp @jon.expo.app · 02/04/2026
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. 👇
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Krystof Woldrich @woldri.ch · 29/03/2026
lately I can't imagine working without git worktrees but there are a couple of things I don't care about, path of the tree, name of the tree, always start from origin main. so over the weekend I (Claude) created a simple SwiftUI app for a quick creation of the trees github.com/krystofwoldr...
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Krystof Woldrich @woldri.ch · 27/03/2026
Can't imagine doing a large ref without knip.dev, agents often forget about dead code.
knip.dev
Declutter your JavaScript & TypeScript projects
Project linter to find unused dependencies, exports and files
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Krystof Woldrich @woldri.ch · 27/03/2026
`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.
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Krystof Woldrich @woldri.ch · 26/03/2026
switching from Cursor and iTerm to Zed and Ghostty feels like joining the dark side
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Krystof Woldrich @woldri.ch · 10/03/2026
Your personal Expo engineer in your hands, available 24/7. Ready to tackle anything from JS, Swift, Kotlin, widgets, notifications, updates all the way to publishing to the App Store.
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Krystof Woldrich @woldri.ch · 05/03/2026
This setup is a must have for large apps.
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Reposted by Krystof Woldrich
React Prague @react-prague.bsky.social · 24/02/2026
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 💛
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phil 🫠 @kitten.sh · 03/03/2026
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 😄
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Taz Singh @tazs.ing · 03/03/2026
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 🚀
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Krystof Woldrich @woldri.ch · 03/03/2026
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.
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Reposted by Krystof Woldrich
Expo @expo.dev · 26/02/2026
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...
expo.dev
Expo SDK 55 - Expo Changelog
Learn about the changes and how to upgrade
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Reposted by Krystof Woldrich
React Native @reactnative.dev · 09/10/2025
Folks are downloading react-native on npm over 4 million times a week, that 100% growth from last React Conf!
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Jon Samp @jon.expo.app · 29/09/2025
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.
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Krystof Woldrich @woldri.ch · 17/09/2025
Great RN meetup today! Thank you @react-prague.bsky.social
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Expo @expo.dev · 11/09/2025
🚀 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...
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React Prague @react-prague.bsky.social · 11/09/2025
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...
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Reposted by Krystof Woldrich
Jess @byjess.bsky.social · 10/09/2025
Amazing, sustained, excellent work by @alanhughes.bsky.social @notbrent.dev @kudochien.dev and team — not to mention an incredibly awesome list of beta testers and external contributors 💛✨
Screenshot of https://expo.dev/changelog/sdk-54#thanks-to-everyone-who-contributed-to-the-release thanking everyone who contributed to the Expo SDK54 release, including Alan Hughes, Aleksander Mikucki, Cedric van Putten, Christian Falch, Doug Lowder, Evan Bacon, Gabriel Donadel, Kudo Chien, Łukasz Kosmaty, Phil Pluckthun, Vojtech Novak, and Wojciech Dróżdż. Other contributors include Aman Mittal, Beto Moedano, Kadi Kraman, Keith Kurak, Quin Jung, Will Schurman, Nishan Bende, Hirbod Mirjavadi, Krystof Woldrich, Jakub Tkacz, Hassan Khan, and Wiktor Smaga.
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Krystof Woldrich @woldri.ch · 11/09/2025
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.
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Krystof Woldrich @woldri.ch · 08/07/2025
Had a great time at the meetup, a fantastic group of people! If you’re in northern Germany, I definitely recommend stopping by.
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Krystof Woldrich @woldri.ch · 08/07/2025
Yesterday was my first day on the @expo.dev Dev Tools team. Super excited to be here and start building cool things! 🚀
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Expo @expo.dev · 21/05/2025
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...
expo.dev
Diagnose and debug errors faster with issues and replays from Sentry in Expo
With the new Sentry integration in EAS you can view crash reports & session replays for your Expo app deployments—so you can fix issues fast, with full context.
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Krystof Woldrich @woldri.ch · 10/04/2025
If you are a React Native dev exploring Lynx React, github.com/getsentry/se... might come in handy.
github.com
GitHub - getsentry/sentry-lynx: Official Sentry SDK for Lynx
Official Sentry SDK for Lynx. Contribute to getsentry/sentry-lynx development by creating an account on GitHub.
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Krystof Woldrich @woldri.ch · 03/03/2025
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...
docs.sentry.io
Configuration | Sentry for React Native
Learn about the User Feedback Widget configuration options.
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Krystof Woldrich @woldri.ch · 14/02/2025
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...
github.com
Release 6.7.0-alpha.0 · getsentry/sentry-react-native
Features Capture App Start errors and crashes by initializing Sentry from sentry.options.json (#4472) Create sentry.options.json in the React Native project root and set options the same as you c...
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Reposted by Krystof Woldrich
Bruno Garcia @brunogarcia.com · 01/02/2025
To all folks building games with #GodotEngine: @sentry.io First Godot SDK release is out. Let us know what you think! github.com/getsentry/se...
github.com
Feedback Wanted: Sentry for Godot · getsentry sentry-godot · Discussion #86
We've shipped version 0.1.0. Our first release of the Sentry SDK for Godot. This release already includes several features, like: Builds on major desktop OS's: Windows, macOS and Linux Capture Godo...
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Krystof Woldrich @woldri.ch · 22/01/2025
Spot the difference, the same bundle, the same frame, same bundle line and col.
Screenshot of a terminal window showing two source-map-cli calls.
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Krystof Woldrich @woldri.ch · 06/01/2025
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...
github.com
Release v1.1.0 · krystofwoldrich/pr-agent
feat(command): Current PR number and link (#4) Install the extension directly from VSCode Marketplace
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Krystof Woldrich @woldri.ch · 30/12/2024
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...
github.com
feat: add retry functionality by amanjeetsingh150 · Pull Request #2168 · mobile-dev-inc/maestro
Proposed changes Adds a retry command to retry a set of commands either inline or from a file. This helps to retry in case of known flakiness. Associates with a retry command so that it&#39;s easy...
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Reposted by Krystof Woldrich
Michał Pierzchała @thymikee.bsky.social · 20/12/2024
The best build is no build
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Krystof Woldrich @woldri.ch · 27/11/2024
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.
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Krystof Woldrich @woldri.ch · 14/11/2024
Just arrived to London for @reactnativelondon.co.uk Looking forward to the UK community and talks. Stop by at the @sentry.io booth tomorrow!
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Krystof Woldrich @woldri.ch · 14/11/2024
Not going to lie, after seeing the notifications I feel like I should start posting…
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