What this is

Ongoing contributions to various codebases and specifications. My favourite way to learn a system is to land a change in it.

• WHATWG HTML Standard — editorial contributions to the living standard, including MathML-related work.
• Matrix — contributions to the open protocol’s website and documentation.
• Inspect — contributions to the UK AI Security Institute’s open-source evaluations framework.
• PolicyEngine — contribution to the open-source tax-and-benefit microsimulation platform.
• SpiderMonkey — implemented a TC39 proposal in Firefox’s JavaScript engine.