[terhechte]

And how do I use that when I want to interactively convert org-mode to html in javascript? Like countless pure-javascript markdown libraries allow me to do? not to mention the security hazards of running emacs with any user input from a website.

[kqr]

That you don't – much like you don't get Pandoc Markdown in JavaScript, because Pandoc is not written in JS.

But if you are content with a less featured variation of the markup language (but still more featureful than Markdown), you can get that for JavaScript too: https://xiaoxinghu.github.io/orgajs/syntax