Comment by simonw

I had Fable 5 compile that Rust code to WebAssembly and build a browser-based playground for it, so you can try it out with Mermaid diagrams here: https://tools.simonwillison.net/grok-mermaid

A few more notes on my Grok code explorations on my blog: https://simonwillison.net/2026/Jul/15/grok-build/