I wrote this because I was frustrated by the recent "16 AI Agents build a C compiler" narrative. Building a C compiler is an exercise in implementation; I wanted to see if one dev could use AI for invention.

The result is TJS. It's my attempt to fix what I dislike about TypeScript (erased types) and solve the eval() problem for AI agents. It treats JS like the Lisp it was meant to be: types are real values, autocomplete works by introspection, and execution is strictly gas-metered.

The playground is live here if you want to test the sandbox or the types: https://platform.tosijs.net

Happy to answer technical questions about the compiler architecture, the AJS sandbox, or how the gas metering works.

I am in Finland so apologies in advance if I am slow to reply.