I ported Kubernetes to the browser

Sam Rose hand-ported the core of Kubernetes to TypeScript so it runs entirely in the browser: pod lifecycle, cluster networking, DNS and deployment controllers, about 100,000 lines written with LLM assistance, every line reviewed, and 2,000-plus tests checked against a real k3s cluster. It ships at roughly 140KB gzipped and exists to power interactive Kubernetes tutorials. A nice data point for what one developer educator can now build with agents.

The HN discussion found the workflow more interesting than the artifact: the review discipline and testing against a real cluster is what separates it from vibe slop, with one commenter suggesting we’re on the cusp of only needing to read the tests. That, and the inevitable jokes about Kubernetes complexity.