Parsing XML from javascript within gnome-shell

[Dru Moore <dru dru-id co uk>]

I've been playing around with writing some shell-extensions and have a
need to parse some proper xml returned from a service endpoint.
Normally (in an app) I'd use libxml2 and parse the response that way.

Is libxml2 fully supported? I see there is a .gir file for it but that
doesn't look complete to me - i.e. I can imports.gi.libxml2 but I'm
having difficulty doing anything with it.

Could someone give me a quick pointer on how to use libxml2 from
javascript OR suggest a better way of parsing a full xml document -
would GMarkup be a better choice?

best wishes