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Leo kettmeir

@kettmeir.dev

Working at @deno.land, working on JSR, documentation generation, and web API stuff like WebGPU. I love animation & illustrations

Posts Replies Media

Leo kettmeir @kettmeir.dev · 10/09/2026

In one week, for two months, i will be in Japan (primarily Tokyo, however I will be in Osaka for between October 9th and 20th). If anyone is around and is interested to meet, feel free to contact me! I will be speaking at VueFes Japan on October 24th, and JSConf JP on November 22nd.

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JSR @jsr.io · 27/02/2026

JSR now lets you diff the generated documentation between released versions of a package, making it easy and clear what has changed in a visual manner! Example: jsr.io/@david/gagen...

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JSR @jsr.io · 24/02/2026

do you see a difference?

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JSR @jsr.io · 23/02/2026

changes are coming

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npmx @npmx.dev · 13/02/2026

We couldn't have built our own docs generation without @deno.land tools, here to collaborate with all registries @jsr.io 🤝 @npmx.dev

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JSR @jsr.io · 13/02/2026

JSR now has a refreshed & improved browsing and viewing experience for the auto-generated documentation, making it easier than ever before to find what you are looking for!

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Reposted by Leo kettmeir

JSR @jsr.io · 05/02/2026

In just 2 hours another bi-weekly open meeting will occur in our discord. find out what has recently been worked on, what may come up next, and ask anything you may have questions about! discord.gg/hMqvhAn9xG

discord.gg

Join the JSR Discord Server!

A modern package registry for JavaScript and TypeScript | 392 members

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Matteo Collina @nodeland.dev · 15/01/2026

Bun is fast, until latency matters for Next.js. We benchmarked the same Next.js app across Node.js, Deno, Bun, and Watt (our multi-threaded Node-based runtime) under identical load on AWS EKS. Throughput looked fine across the board. Latency told a very different story. 🧵

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EuroRust @eurorust.eu · 06/11/2025

In his talk at #EuroRust25, @kettmeir.dev shared how the @deno.land project improved error handling by migrating from the anyhow crate to using thiserror and concrete error types – watch it on YouTube now! 🦀 👉 youtu.be/f6eofqicw_s #RustLang #RustConference #EuroRust

youtu.be

From Any to This - Leo Kettmeir | EuroRust 2025

YouTube video by EuroRust

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JSR @jsr.io · 25/04/2025

🌕 🌖 🌑 jsr.io

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RustLab Conference @rustlab.it · 11/11/2024

Diving into the world where Rust meets JavaScript! 🦀 💛 Great insights from Leo Kettmeir on "How to integrate JavaScript in your Rust program" at #RustLab2024. Thank you! #RustLang

Leo Kettmeir at RustLab, the International Conference on Rust in Florence, November 9th, 2024 - November 11th 2024

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