parse Xml with invalid characters

parseXmlSafe-babel.js

var parseXmlSafe = function parseXmlSafe(text) {
    "use strict";
    text = text.replace(/(?:[\0-\x08\x0B\f\x0E-\x1F\uFFFE\uFFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF])/g, "");
    if (window.DOMParser) return new window.DOMParser().parseFromString(text, "text/xml");else if (ActiveXObject) {
        var activeXObject = new ActiveXObject("Microsoft.XMLDOM");
        activeXObject.async = false;
        activeXObject.loadXML(text);
        return activeXObject;
    } else throw new Error("parseXmlSafe: XML Parser Not Found.");
};

parseXmlSafe-es6.js

let parseXmlSafe = text => {
    "use strict";
    text = text.replace(/[^\x09\x0A\x0D\x20-\uD7FF\uE000-\uFFFD\u{10000}-\u{10FFFF}]/ug, "");
    if (window.DOMParser) return (new window.DOMParser()).parseFromString(text, "text/xml");
    else if (ActiveXObject) {
        let activeXObject = new ActiveXObject("Microsoft.XMLDOM");
        activeXObject.async = false;
        activeXObject.loadXML(text);
        return activeXObject;
    } else throw new Error("parseXmlSafe: XML Parser Not Found.");
}

consider using https://github.com/jindw/xmldom if you got the XML Parser Not Found error