Writing

Making invalid states unrepresentable in TypeScript

Most "impossible" bugs are really states the type system let you construct. Discriminated unions let you delete a whole category of them by design — before they ever run.

Rendering millions of points in the browser with deck.gl

Putting millions of geospatial features on a map without melting the main thread is mostly a story about the GPU — and about what you choose not to render.

Why I still reach for test-driven development

After a few hundred thousand lines of code, TDD isn't dogma for me — it's the fastest way I know to design software I actually trust.