Ask HN: Web editor that operate with AST?

I'm looking into integrate a way to generate Typst, html and other output from my app, I could provide a raw text for it but wonder if exist a decent UI editor that fully operate on AST nodes I can (hopefully define!) use for transform it.

I know pandoc and such could work, but I looking to target pdf, word, excel and how do it nicely is something I wish to do.

The task is build all kind of business docs: Invoices, Quotes, Excel reports, etc

(if there is a better way, I'm hears!)