Heyooo, I'm Stefan! I write and speak about web stuff.

New on the blog

1. A ready-to-use diff component

   Published Jan 03 2026 in Tools

   A JavaScript / React package to render diff components.

2. Feature detection of View Transition Types

   Published Dec 23 2025 in JavaScript

   A quick snippet to feature detect View Transition Types.

3. Simon Willison on delivering AI generated code

   Published Dec 19 2025 in AI

   Quotes from "Your job is to deliver code you have proven to work".

4. light-dark() isn't always the same as prefers-color-scheme

   Published Nov 24 2025 in CSS

   light-dark() and prefers-color-scheme treat the defined color-scheme values differently.

5. Three conditional border-radius CSS snippets

   Published Nov 17 2025 in CSS

   Three snippets to implement conditional border radius.

6. How to "officially" deprecate methods with Node.js utilities

   Published Nov 15 2025 in NodeJS

   Use the Node.js' deprecated utility to deprecated methods.

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