Parse xml string to xml

parseXml.js

// https://stackoverflow.com/questions/11563554/how-do-i-detect-xml-parsing-errors-when-using-javascripts-domparser-in-a-cross
function parseXml(xmlString) {
    var parser = new DOMParser();
    
	// cleanup Xml
	xmlString = cleanupXml(xmlString);
    
    // attempt to parse the passed-in xml
    var dom = parser.parseFromString(xmlString, 'application/xml');
    if(isParseError(dom)) {
        throw new Error('Error parsing XML');
    }
    return dom.childNodes[0];
}

function isParseError(parsedDocument) {
    // parser and parsererrorNS could be cached on startup for efficiency
    var parser = new DOMParser(),
        errorneousParse = parser.parseFromString('<', 'application/xml'),
        parsererrorNS = errorneousParse.getElementsByTagName("parsererror")[0].namespaceURI;

    if (parsererrorNS === 'http://www.w3.org/1999/xhtml') {
        return parsedDocument.getElementsByTagName("parsererror").length > 0;
    }

    return parsedDocument.getElementsByTagNameNS(parsererrorNS, 'parsererror').length > 0;
};

function cleanupXml(xmlString) {
    // String Cleanup on recieved xml
    xmlString = xmlString.replaceAll('\\r\\n','');
    xmlString = xmlString.replaceAll('\\','');
    xmlString = xmlString.replaceAll('>rn','>');
    xmlString = xmlString.replaceAll('"<','<');
    xmlString = xmlString.replaceAll('>"','>');
    return xmlString
};