Mateusz Kadlubowski

Charlotte Wainwright restoring and saving old/ancient books. www.wainwrightbookbinding.com

i've written up some thoughts about AI in the open source world, and more importantly, why humanity is important. its a bit wordy and doomy but this is an important topic right now. there is still a lot of good in the OSS world at least ❤️

new post on my personal blog. i think these three areas often go unexplained, so hopefully this explains why some of these packages exist. these are fine to exist but the majority of developers shouldn't have to pay the cost for them.

Test tags are coming to Vitest 4.1 (beta)! And they are powerful 💪 main.vitest.dev/guide/test-t...

🎄Christmas wishlist & new year resolution: Get more time I can justify to get more involved with OSS projects... 🙁

Something is moving regarding svelte custom renderers...help us bring this to the finish line! 🧡

Louder for the people in the back 📣 Managing infra, hosting accounts, supporting user issues, dealing with incidents and outages, software updates, security updates, dna cost, server cost, etc. is the unpaid, undervalued, and underacknowledged labor of this community

Nowadays, we can do better: ``` box-shadow: 0 1px 2px rgb(from currentcolor r g b/ .65) ``` Cross-browser since September 2024. #tinyCSStip #CSS

I finally cracked embedded formatting in @biomejs.dev ! Soon we'll be able to land proper formatting for HTML, Vue, Svelte and Astro. Angular requires some more plumbing, but we're there.

I scored 15/28 on jsdate.wtf and all I got was this lousy text to share on social media. Too high, I was shooting randomly... Now, can the progress on Temporal API be sped up, a little bit, please? Just so I can forget this quiz quickly 🥲

🧵 THREAD: People keep saying Svelte is "too magical" - but Svelte 5 just changed the game completely. Let me show you why Svelte 5's "magic" is actually just syntactic sugar over patterns you already know from React, Solid, and Angular.

I’ve made Sveltest a thing 🫣 sveltest.dev This is documentation for getting started using vitest-browser-svelte in your projects I’m currently going through the docs sveltest.dev/docs/getting-started comparing with what me and my team are doing “real-world” and validating Contributions welcome

I had an absolute blast on the @syntax.fm podcast with @tolin.ski and @wesbos.com, talking about how @storybook.js.org has evolved, what you can expect from Storybook 9, and what we're thinking about Component Testing!! Thanks for having me! ❤️

In today's released talk from Svelte Summit Spring 2025 @dominikg.dev talks extensively about testing your Svelte applications with Vitest and Playwright — Testing, 1 2 3 4. www.youtube.com/watch?v=ljmU...

It was fantastic to give this talk and share all the cool stuff we've been working on. Check it out to see what we've been cooking in Storybook for Svelte and/or Component Testing. 🎉

If you care about the testability of your CSS styles, you should upvote this proposal by @justinfagnani.com to the heavens. It would be a huge thing to solve IMO. 🎉 Repost for reach. 🙏 github.com/w3c/csswg-dr...

Super cool talk by @reinhold.is at the @svelte.dev Summit in Barcelona about @storybook.js.org. It looks like such a powerful and useful tool 🤩 #SvelteSummit #Svelte

@reinhold.is spoke a story (pun intended) in a calm voice, explaining why UI in 2025 is quite complex. And ended up with reasons why we may need Storybook, and how it can help us. Well spoken! 👏 #SvelteSummit

Woah, that's quite a testimonial for @pnpm.io 👏

I'd love input from any @storybook.js.org Storybook + Svelte CSF users out there on this new RFC, if you think it would be helpful or bad or unnecessary or great. (might be using too many insider-terms, sorry)

📢 Heads up to all @svelte.dev 5 users of @storybook.js.org: We've published a new prerelease version of the Svelte CSF addon, that contains some breaking changes. If you're using @storybook/addon-svelte-csf with Svelte 5, you should take a look at the release notes. @sveltesociety.dev

@jsr.io supported out of the box by pnpm I love these guys!!! 🧡

ECMAScript excitement 😉 TypeScript's @chronicles.org is pitching enum in JS 🎉 It's the good parts of TS enum + enhancements: 🔶 More datatypes: Symbols etc 🔶 Iterable 🔶 Immutable 🔶 Null prototype 🔶 No declaration merging 🔶 Compatible with Node type-stripping 👍 github.com/rbuckton/pro...

Thank you @ciscorn.bsky.social 🙇!!! I'm very grateful and honored to have the very first OSS sponsorship ever - from you!

SvelteKit is now fully supported in Deno with the latest changes to improve Typescript and editor support!

It's official! I'm speaking at Svelte Summit, come see me in Barcelona in May! Can't wait to meet you all in person! I'll be diving into @svelte.dev with @storybook.js.org, and how you can use it to write delicious Component Tests! 🚀 Might also include a surprise collab... 🙊

In a previous post I explained why passing a Svelte rune to functions doesn't update the value but here's how you can wrap or box a value which can be passed and updated using a couple of lines of code. 😎

Wooho, congratulations @ciscorn.bsky.social on winning Svelte Hack 2024 - Migration Magician!!! 🏆 Your hard work paid off!

Many thanks for those blog posts. I've always loved how much attention you're putting into making examples as practical as possible. TIL about #TypeDoc `{@includeCode}` - super handy!

Really awesome! I made it work in @storybook.js.org: 1. create simple wrapper - import Svelte Render Scan - pass-through the Story as children 2. add wrapper as a global decorator to Storybook's preview.js PS: @reinhold.is @xeho91.dev I followed examples from this issue github.com/storybookjs/...

@sveltesociety.dev any chance you can make a tradition to make in-person Svelte Summit at least ONCE a year? I have to say hard pass to the one this year, but I'd love to make it up next year.

introducing atcute, a collection of lightweight TypeScript packages for AT Protocol API client, OAuth client, utility packages for various data formats, Bluesky-specific utility packages for rich text and posting they're all covered!

I ended 2024 with more key contributions to #OSS and #Svelte ecosystem. 1. Storybook and Svelte 5 2. svelte-ast-print 3. We (me and @ciscorn.bsky.social) are brewing svelte-docgen I'm welcoming 2025, with a mindset that I'll continue to contribute to DX of Svelte ecosystem. Happy New Year! 🌟

🍧🎄 Melt UI Runes is now open-source: www.thomasglopes.com/articles/mel...

hey, I run a little hobby project called #curl

Chromium: Intent to Ship in v133 #CSS `text-box`, `text-box-trim` and `text-box-edge` groups.google.com/a/chromium.o... this feature is RAD. try it in Canary with this syntax explorer visualizer tool I'm hackin on codepen.io/argyleink/fu...

Storybook IS a testing tool.

Say what you want. 18th December is definitely my most favourite day in Advent of Svelte. Package esrap supporting TypeScript, and now some extra super powers to outputs preview, including AST. 🧡

My article “Downsize your JavaScript: Mastering Bundler Optimizations” is out. It covers practical steps to reduce the amount of JavaScript you ship. I also compared 7 bundlers to help you make an informed decision about which one might be best for you. dev.to/filipsobol/d...

On the 18th December @rich-harris.dev and Manuel from Svelte maintainers team gave me a big 🎁: Package esrap now supports TypeScript!!! github.com/Rich-Harris/... Thanks guys! 🥹

Oh wow... 🥲 Have memorable fun, everyone who's going to be there; make it a blast! 🧡

Package `svelte-ast-print` now supports AST node `EachBlock` without `as` item github.com/xeho91/svelt...

Package `svelte-ast-print` now supports AST node `SvelteBoundary` github.com/xeho91/svelt...