[jafitc]

Is this something that can run in browser Workers via wasm or other means?

Most of CSS OM is already implemented in Javascript which can come in handy for this project:

https://github.com/NV/CSSOM

https://github.com/jsdom/cssstyle

(both of which jsdom use internally. cssstyle is a kind of updated version for some parts of CSSOM)

[devongovett]

Yes, there is a WASM build used by the demo: https://parcel-css.vercel.app

Not sure if we could reuse these packages though, since we'd need to expose an API from Rust to JS anyway.