Failed to execute 'serializeToString' on 'XMLSerializer': parameter 1 is not of type 'Node'

help ! I run the example in node .
var tj = require('togeojson'),
fs = require('fs'),
// node doesn't have xml parsing or a dom. use xmldom
DOMParser = require('xmldom').DOMParser;

var kml = new DOMParser().parseFromString(fs.readFileSync('foo.kml', 'utf8'));

var converted = tj.kml(kml);

var convertedWithStyles = tj.kml(kml, { styles: true });
but it throw the error "Failed to execute 'serializeToString' on 'XMLSerializer': parameter 1 is not of type 'Node'", I checked the var kml , it is the type of Document

Start with the Node.js example in the issue and trace the tj.kml(kml, { styles: true }) path, comparing the xmldom Document with the value passed to XMLSerializer. Reproduce the error with the shown example; done means KML conversion with styles completes without the serializeToString Node-type error.

Written by the indexing model from the issue text.