filter and getElementById not working as expected

[florianeichin]

the parse options and methods filter and getElementByID are somehow not working as I understand them.
Is there some bug or maybe lacking docs?

I expect the same result for a and b and furthermore for c and d, right?

const a = txml.parse(rawXML, {
  filter: (dom) => dom.attributes.webdavID == id,
});
const b = txml.parse(rawXML).filter((dom) => dom.attributes.webdavID == id)
// expect a==b
// result: a is node with id and b == []

const c = txml.parse(rawXML, { searchId: 'N10005' });
const d = txml.getElementById(rawXML, 'N10005');
// expect c==d
// result: c is whole xml and d is the node with id