For those wondering, this is now the default markdown processor in Astro 7: https://astro.build/blog/astro-7/#markdown--mdx-in-rust
It almost feels like a parody...?
what is the use case of this application? Who may need it?
Probably easier to think of it more as a fast, native-backed library for a JS runtime like Node to build Markdown processors/pipelines or even just do parsing. (Though it does have a WASM build for browser/edge use.)
Processing markdown into html is a significant task for many blogs, sites, and apps. Satteri moves that processing into rust for speed gains.
Now used in Astro 7: https://astro.build/blog/astro-7/#markdown--mdx-in-rust