Hello, my name is Felix, and I’m an independent software engineer from Germany. When I’m not spending time with my family, I enjoy working on and learning about Internet technologies, programming languages and developer tooling.

I occasionally write about these things.

or you can email me (GPG key).

Projects

Current and past projects that I created:

astexplorer.net
An online editor to explore abstract syntax trees of various languages and prototype plugins for popular code transforms (Babel, ESLint, …).
react-docgen
A static code analyzer to extract API documentation for React components.
jscodeshift
An AST based codemod (one-time code transformation) tool for JavaScript.
JSBasics (2017)
An interactive introduction to the fundamentals of JavaScript.
jsnetworkx.org (2012 - 2015)
A port of the Python graph library NetworkX to JavaScript (incomplete, unmaintained).
Game of Life (2011)
A Game of Life implementation in JavaScript, with <canvas>.

JavaScript

JavaScript is the language I’m most familiar with and I enjoy helping people understand its oddities. I would like to build more interactive tools to help with that. To start with, JavaScript “loose” comparison step by step shows which steps of the comparison algorithm are taken for specific values.

Favorite quotes

“I may not have gone where I intended to go, but I think I have ended up where I needed to be.” (Douglas Adams - Hitchhiker’s Guide to the Galaxy)

“Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away.” (Antoine de Saint Exupery)

“If you’re not making mistakes, you’re not doing anything.” (John Wooden)