Re: cloneNode in a xpcom component failed

Paste from https://bugzilla.mozilla.org/show_bug.cgi?id=467123 :
 -------  Comment #4 From  Boris Zbarsky (:bz) (todo: 175+ items)
2008-11-28 20:31:53 PST   (-) [reply]
Also note that this consumer is using XHR in "backwards compat" mode
(without
an explicit init() call), so some things will just be broken.  This is
one of
them.  I do still think we should make this work, though.

I don't understand. XHR.init() is [noscript], I can use it in a JS
component ?