Matt Rossman

Supabase laptop looking fresh

Supabase Select brings together the top builders in the industry Join Guillermo Rauch, CEO and Founder of @vercel.com speaking in Track 1 Apply today: select.supabase.com

Delighted to share that I’ve joined @supabase.com to work on AI tools! Open source has taught me so much, so it’s a privilege to now contribute full-time in this space. Excited to help make this excellent developer platform even better!

We're really proud to show off the final design for Pebble Time 2*! It's quite a bit sleeker and imo more awesome looking than the original design for Core Time 2 we showed off in March. I hope you like it!

My Voices of VR interview is out! I spoke to @kentbye.com at @awexr.com about my game, WebXR broadly, and publishing on @viverse.com. I'm a huge fan of this podcast b/c of Kent's journalistic objectivity and ethics, but also his genuine enthusiasm and deep experience voicesofvr.com/1615-viverse...

ECMAScript excitement 😉 Congrats to @bakkot.com on advancing UInt8Array ↔️ Base64/Hex to Stage 4 at TC39 this week 🎉 UInt8Array.prototype. toBase64 toHex UInt8Array. fromBase64 fromHex It lets you convert directly between binary data and Base64/Hex strings 👍

Exporting video with correct colors from #DaVinciResolve is unexpectedly difficult... Something that looks great in editor looks maddeningly "off" in different viewers. I have a lot respect for creators who have mastered this! www.youtube.com/watch?v=1Qln...

I wrote about why I'm tired of reading about takes on quality. ericwbailey.website/published/qu...

Early builds of a rewritten SpotMenu (Spotify controls for Mac menu bar) are popping up in this thread, looking nice 👀 github.com/kmikiy/SpotM...

TIL about ::part() for letting web component consumers more easily style elements within the shadow DOM

On device voice assistant running on my Mac Mini w/Ollama and Home Assistant: mattcool.tech/posts/home-a...

Spotted on the changelog for Deno Deploy EA... Playgrounds! - Create and edit playgrounds - Multi-file playground support - Playground templates and settings docs.deno.com/deploy/early...

I use a $35 HP T620 Thin Client as my home server. I measured its energy usage over the past couple of months to assess how much it costs me to run a lightweight always-on server with #HomeAssistant and media management software (around $0.08/day).

Sometimes I want to interrupt an async function that doesn't support abort signals. In situations without side-effects, here's a wrapper to abort a promise and lazily discard its result. I generally prefer safer interruption patterns (as in #Effect-TS) but it's handy in a pinch.

A helpful calculator for learning optimal synergies in #Balatro efhiii.github.io/balatro-calc...

I like to put `ignore/` in .gitignore for most projects I work on. When I want to create an untracked file (e.g. private notes, large static asset for dev) I can toss it in an `ignore/` folder anywhere. Wish something like this came in more starter templates! #git

I was going nuts trying to figure out why Cloudflare logs for my MCP server were showing requests every 5 minutes from my location. Turns out Claude Desktop was the culprit, even though I closed the app and removed the MCP server config it left an `mcp-remote` process running in the background 🙃

If you use moonrepo.dev/proto to manage Node versions and face `EOENT` / `EPIPE` errors when configuring local MCP servers in Claude desktop, here's a solution that worked for me: github.com/modelcontext...

🚀 All week, we’re sharing powerful voices from the VIVERSE stage at GDC 2025. Today, meet @jamesckane.bsky.social — a game dev pushing boundaries and redefining XR design with #VIVERSE. 🎥 Watch now: www.youtube.com/watch?v=un5ZZKupV-E #WebXR #JamesKane #VIVERSE #PlayCanvas

😘 react.dev/blog/2025/04...

The tsdown documentation site is now live! Check it out here: tsdown.dev

bsky.app/profile/jtsk...

"It makes doing the hard, tedious, and error-prone tasks that require discipline – easy, natural, first-class." – Dillon Mulroy @dillonis.online on why the Domains team at @vercel.com is betting on Effect. Watch Dillon’s full talk from Effect Days 2025 ⤵️ youtu.be/VZpr91dU03c

Why do AI company logos look like buttholes? velvetshark.com/ai-company-l...

Zod 4 is now in beta! 💎 7x faster object parsing 💎 20x reduction in tsc instantiations 💎 57% smaller core bundle size 💎 metadata via .meta() 💎 z.toJSONSchema() 💎 z.templateLiteral() 💎 z.stringbool() 💎 z.int32(), z.float32(), etc 💎 z.file() 💎 new logo 😇

Effect 4.0 is on the way – smaller, faster, and more refined. In his closing remarks, Michael Arnaldi, creator of Effect, shared what’s coming: ▸ ~20× faster streams & batching ▸ Smaller bundles ▸ STM integrated into core Big changes, same focus. www.youtube.com/watch?v=nyvB...

Gross. www.nytimes.com/2025/04/08/b...

This convinced me to get a Rebble subscription! Gemini on my wrist is a convenient interface for complex interactions.

Effect Days 2025 kicked off with two powerful talks: ▸ Johannes Schickling @schickling.dev opened the day with key updates on the Effect ecosystem ▸ Maxwell Brown @maxwellbrown.bsky.social delivered the keynote on building AI agentic systems using Effect’s new AI packages 🧵

v1.24.0 of ForecasWatch 2 fixes issues with the config page on iOS and vibrate on disconnect. #Pebble #RePebble

This is such a QOL improvement 😩

Welcome, Mr President! (Confirmed real)

✍️ Writing dual APIs with Effect Many functions in @effect-ts.bsky.social support a dual API for convenience whether used isolation or in pipelines: - withBehavior(effect, fn) - effect.pipe(withBehavior(fn)) This post explores how to use `dual` to write your own functions with the same ergonomics.

Learned about this public echo server for testing #WebSocket clients yesterday, just connect to wss://echo.websocket.org