Ryan Hunt

On this Woden's Day, we say Skål to asm.js!

https://spidermonkey.dev/blog/2026/05/20/saying-goodbye-to-asmjs.html

Just had two NPE's this week (aka. Near Pwned2Own Experiences).

Always remember: Index liberatus, vita nulla

alt: my yearly offering to the white tailed deer population.

My 300 white spruce saplings were delivered today. Guess I know what I’m doing tonight and and tomorrow..

@esoterra @sunfish Yup! The goal here is basically create an evergreen and updated version of that.

@esoterra Ah, sorry to hear that. I don't have any influence over MDN editorial policies unfortunately.

Anyone interested in contributing is welcome to join the #webassembly channel on MDN's discord. https://discord.gg/9kqNjFdfpD

We’re building a user-friendly WebAssembly language reference on MDN!

Want to help make Wasm more accessible? We’re looking for technical writers and reviewers to join the project.

Start here if you're interested: https://github.com/mdn/mdn/issues/821

@wingo@mastodon.social @mjk@hachyderm.io Always good to be the best of the worst :) I'd take a look at JetStream (https://github.com/webkit/jetstream) It's moved to an open governance model and is open to new workloads. We want workloads to be representative of real content, so there's a medium-to-high bar to be a default workload. But we'd also like to have experimental workloads that browsers can run optionally, and have a permissive policy for that.

@wingo@mastodon.social Interesting! Spidermonkey has done almost no optimization for tail calls. There could be some low hanging fruit there. One hard part is saving/restoring Instance state across tail calls. We biased our ABI towards normal calls at the expense of tail calls

Nothing summons a foot of snow quicker than whispering to yourself “I think spring is finally here”.

free-solo climbing is cool and all, but have you ever had to carry 2000 lines of uncommitted code on your clipboard while rewriting a different file?

Does anyone have recommendations for a good pre-built desktop build machine? System76 looks neat, but I’ve never had one before.

Interested in getting involved in WebAssembly standards?

The JS type reflection proposal needs a champion! Mentorship would be available. We'd love to see new folks in wasm standards.

Current proposal is here: https://github.com/WebAssembly/js-types/

You know you're working on something fun when you need to break out the ASCII diagrams.

It's gonna be one of those sorts of days, huh?

wife: we need to talk about our plans for tonight
me: wow look at the discontinuity on this snow dune

I fear no man.

But that thing...
[Implicit Integer Promotion Rules]

...it scares me.

Have you ever wanted to learn about the architecture of a production JS engine? This video by Luke Wagner on SpiderMonkey is a great start. It's from a 2018 Mozilla event, and was just made public. Most of the details are still accurate AFAIK. https://mozilla.hosted.panopto.com/Panopto/Pages/Viewer.aspx?id=14c5c021-e5d7-4604-ae5f-ac32013870a1

@dazo Just an FYI, Mozilla’s privacy policy commits to “We never sell your personal data.” https://www.mozilla.org/en-US/privacy/faq/

I wrote a thing! Here's my hot take on where WebAssembly should go next.

https://hacks.mozilla.org/2026/02/making-webassembly-a-first-class-language-on-the-web/