I’m not aware of that, but what do you want to achieve? Do you want to highlight Typst code with Prism in some HTML page? Or do you want to highlight some language code inside a Typst document?
In case you want to highlight code by using Typst, you can already do that with raw.lang. Or if some language isn’t supported yet, you can add your own definition by using raw.syntaxes, which uses sublime-syntax file format.