You're welcome!

By the way, something I've considered but not implemented yet are options to tweak the formatting (for instance, whether to indent or inline comments / variations). The Prettier approach is to be opinionated, but some language-specific options may be useful.

The DSL itself is pretty nice. However, one thing I found annoying is that the printing function itself is hard to unit test: there is no easy way to instantiate its parameters (in particular the `ASTPath` class). So I relied on testing it by calling `Prettier.format()`, which is more a end-to-end test of the whole plugin. Maybe I'll figure out another solution at some point.

You mean inside markdown? Prettier supported that since 2017 [1], it will call the individual plugins to handle content inside the code blocks.

[1]: https://prettier.io/blog/2017/11/07/1.8.0.html

This looks a bit cumbersome to write to me.

I really like the JS preview/rendering plugins for fenced code blocks in Markdown. For example Mermaid, which is supported by many Markdown renderers or IDEs. [1]

It would be fun to have something like this for chess notation, that interactively renders the last position with forward and back buttons.

Static PDFs are mostly a thing of the past.

[1]: https://github.blog/developer-skills/github/include-diagrams...

Thanks for the idea, I'd not considered it. LaTex may have some use, I'll take a look. Indeed, probably the best solution to publish a game with diagrams.

For personal notes, I would also consider embedding PGN into Markdown. Sadly, PGN rendering in Markdown isn't supported yet, as far as I know (something like Mermaid would be awesome).