Love everything you do Steve, consider that I've done it for you

It depends in what regards you mean, I have some benchmarks here if you'd like to take a look at those: https://github.com/Princesseuh/web-markdown-benchmark

The TL;DR is that `marked` is very light, but a bit on the slower side compared to Sätteri and `markdown-it` (and its forks). I'm not sure how friendly the extensibility is, but Sätteri re-use the same AST format as the unified ecosystem, which might feel more friendly.

Both good options, though!

It was tough to create a plugin API that was both performant and intuitive. Especially since the library people were migrating from (remark/rehype) was very laissez-faire in regard to the data you have access to, visiting patterns, etc.

Crossing data between Rust and JS is inherently kinda slow (relatively), so there's a constant push and pull between flexibility and performance that's not always easy to reason about!