For eight years, I’ve wanted a high-quality set of devtools for working with SQLite. Given how important SQLite is to the industry1, I’ve long been puzzled that no one has invested in building a reall...

At Squarespace, many of our core products are built on web standards, and our engineers are constantly pushing the boundaries of the web’s capabilities. Occasionally, those boundaries reveal a limitat...

Replace the dlclark/regexp2 regex engine with QuickJS's libregexp compiled to WebAssembly and called via wazero (pure Go, zero CGO). This gives full ECMAScript regex compliance including Unicod...

Over the past 2 months, I’ve been working on a JavaScript interpreter using Claude Code. It’s been an interesting side project, to learn about the weird corners of the ECMAScript spec while figuring o...

A big part of the job of working with Claude Code currently is task breakdown. This serves two purposes:

Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.

daily runner of test262 for many engines

YouTube video by Stanford University School of Engineering

programming isn't a competition

Rank the web platform features you care most about

A lot more words on a short statement I made last week on social media...

Thinking about applying to a Recurse Center (RC) batch? If you want to spend 6 or 12 weeks building what excites you (compilers! games! languages! research!…

In mounting an unsolicited bid for Google’s browser, the three-year-old AI startup seeks to take advantage of uncertainty over a pending antitrust ruling.

We’ve had decades of thought leadership around testing, especially coming from wholistic development philosophies like Agile, TDD, and BDD. After all that time and several supposedly superseding movem...

YouTube video by Matt Keeter

YouTube video by Recurse Center

I made something that I think is pretty neat, and I want to tell you about it. This is a little hot air balloon made out of alternating layers of brass and bronze that lock together with these angle...