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Piotr Tomczewski

@tomczew.ski
98 followers 332 following 50 posts

💻 React Expert at @callstack.com Railway tracks × React Performance tracks Chili crisp maximalist. Will code for LEGO. 🏳️‍🌈 He / him

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Piotr Tomczewski @tomczew.ski · 03/04/2026
on a train, still shipping
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Piotr Tomczewski @tomczew.ski · 03/04/2026
it's moving day agent-react-devtools is getting a new home
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Piotr Tomczewski @tomczew.ski · 26/03/2026
ChatGPT on web, iOS, and macOS all using different background colors like it’s a multiverse of gray. Somewhere in a meeting: “We need consistency.” Designer: “Absolutely. Anyway, here’s a new gray.”
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Reposted by Piotr Tomczewski
James @43081j.com · 02/03/2026
casually browsing around @npmx.dev and saw this. the feature is working well 😄
a screenshot of a warning stating that an unspecified package has increased in size by 3074% since the last version
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Piotr Tomczewski @tomczew.ski · 27/02/2026
I thought I’d let ChatGPT narrow down hotels in Paris to 3 options. It gave me a map covered in blue dots. So yeah. Still choosing
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Piotr Tomczewski @tomczew.ski · 14/02/2026
Xcode: no such module ‘Expo’ Expo: literally the whole app
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Piotr Tomczewski @tomczew.ski · 11/02/2026
I built a tool that gives AI agents access to React DevTools ⚛️🤖 Your AI coding assistant can now inspect components, profile renders, and diagnose performance issues completely on its own. Works with @cursor.com.web.brid.gy, @claudecode.bsky.social, Codex, Open Code, or any other you like
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Piotr Tomczewski @tomczew.ski · 11/02/2026
Just bought tickets for Robyn 🖤 And I love this idea: you can confirm a regular ticket, grab a discounted solidarity ticket if you need it, or pay a bit more to help cover someone else's. More shows should work like this
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Reposted by Piotr Tomczewski
Barry Pollard @tunetheweb.com · 04/02/2026
From Chrome 145 (on general release next week!), DevTools we will start to show so called "soft" navigations and "Soft LCP" in the Performance Panel traces. These are for SPAs which don't do a full page load, but instead "fake it" by updating the current page and pushing a new history entry. 1/5 🧵
Screenshot of a performance trace in Chrome DevTools with a few additional "Nav*" and "LCP*" markers. Hovering over the "LCP*" shows this is a "Soft LCP" and in the Summary panel when you click on it you see "Soft Largest Contentful Paint" and a "Learn more about Soft Largest Contentful Paint" link.
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Piotr Tomczewski @tomczew.ski · 10/02/2026
I love using dictation, but it’s the worst when it suddenly goes off the rails. I’m speaking English, and it transcribes everything in Polish or, in the most random case, Japanese (I still have no idea how that even happened). 😅
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Piotr Tomczewski @tomczew.ski · 10/02/2026
AI can write UI fast. Debugging re-renders still feels… manual: Profiler → screenshot → explain to the model. Anyone found a better workflow?
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Piotr Tomczewski @tomczew.ski · 10/02/2026
Love getting target ads for things I actually want to buy only to find out every single one is sold out 🙃
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Piotr Tomczewski @tomczew.ski · 09/02/2026
How could I live before @openclaw-x.bsky.social?
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Piotr Tomczewski @tomczew.ski · 09/02/2026
Or you can be me and decide it’s time to upgrade to Max 😅
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Piotr Tomczewski @tomczew.ski · 09/06/2025
Apple Foundation Models will support tool calling?! 😲 I’m seriously impressed. #WWDC25
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Piotr Tomczewski @tomczew.ski · 18/03/2025
👨‍⚖️ react-native-legal 1.1.0 is here! 🚀 ✅ Better monorepo support, license scanning now includes workspace:* dependencies. ✅ CocoaPods use_frameworks support
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Piotr Tomczewski @tomczew.ski · 12/03/2025
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
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Bramus @bram.us · 18/02/2025
🤩 Scroll-Driven Animations got switched on by default in WebKit! github.com/WebKit/WebKi... This means that the next Safari Technolgy Preview release should have it, and that a stable release might follow soon 🤤 ℹ️ Learn all about SDA over at scroll-driven-animations.style
github.com
Turn on Scroll Driven Animations by default by nmoucht · Pull Request #40646 · WebKit/WebKit
c5b7f26 Turn on Scroll Driven Animations by default https://bugs.webkit.org/show_bug.cgi?id=287733 rdar://144887859 Reviewed by Antoine Quint. Turn on Scroll Driven Animations by default. * Sour...
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Ben Holmes @bholmes.dev · 12/12/2024
We need more "letter to the editor" posts like this one. Go off auth king @pilcrowonpaper.com 👑 pilcrowonpaper.com/blog/dear-oa...
pilcrowonpaper.com
Dear OAuth providers
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Piotr Tomczewski @tomczew.ski · 13/12/2024
When you get on the train, looking forward to breakfast, and realize there’s no dining car today 😢
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Piotr Tomczewski @tomczew.ski · 11/12/2024
That's a great question!
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Reposted by Piotr Tomczewski
React @react.dev · 05/12/2024
React v19 is now stable! react.dev/blog/2024/12...
react.dev
React v19 – React
The library for web and native user interfaces
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Reposted by Piotr Tomczewski
Josh W. Comeau @joshwcomeau.com · 29/11/2024
😂 I love this. “The UX of LEGO Interface Panels”, a look at the fictional interfaces printed on 2×2 sloped bricks. interactionmagic.com/UX-LEGO-Inte...
A big collection of lego bricks with printed control panels, taken from many different sets.
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Piotr Tomczewski @tomczew.ski · 27/11/2024
Did I imagine this, or was the name change from "Server Actions" partly due to plans for GET Server Functions support? 🤔 Can't seem to find anything on this.
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Piotr Tomczewski @tomczew.ski · 25/11/2024
I tried to avoid this, but I think it's time to find an alternative to Arc. What do you recommend?
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Mike @grabbou.com · 24/11/2024
🪄 Meet Cali: An AI agent for building React Native apps! Cali can build your project, manage your devices and emulators, help you find and install a library and more... Try Cali today! `npx cali` Powered by @vercel.com AI SDK. Hacked by me and @kwasniew.ski 💜
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Reposted by Piotr Tomczewski
𝖉𝖗 𝖌𝖎𝖉𝖊𝖔𝖓 𝖌𝖆𝖌𝖓𝖔𝖓 @doktorgg.bsky.social · 22/11/2024
Wiem, wiem, ale ze Skłodowską żart nie byłby tak dobry
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Piotr Tomczewski @tomczew.ski · 21/11/2024
All green ✅
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Piotr Tomczewski @tomczew.ski · 20/11/2024
Soon, you'll be able to toggle component render highlighting directly from the top bar. Small quality-of-life improvement that makes a difference! Still searching for an icon for it 🤔 #ReactDevTools
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Piotr Tomczewski @tomczew.ski · 18/11/2024
Inspired by @aidenybai.bsky.social React Scan, I’ve improved the "Highlight updates when components render" feature in React DevTools to make it more useful and readable. Should I release it? 🤔
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Reposted by Piotr Tomczewski
Ricky @ricky.fm · 14/11/2024
This fix for this is so slick: instead of reverting back to the old behavior where Suspense fallbacks have to wait for suspended siblings to render, the new feature commits fallbacks immediately, then schedules a render for the siblings after to "pre-warm" the lazy requests in the tree.
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Astro @astro.build · 11/11/2024
ikea.com now on Astro. Heard it was as easy to build as my bookshelf 🇸🇪
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Piotr Tomczewski @tomczew.ski · 07/11/2024
I ❤️ that my feed here is filled with 😻 rather than politics
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