const {JSDOM}Â = require('jsdom');
var jsDomDoc = new JSDOM(`<!doctype html><html><head><title>some doc</title></head>
<body><div id="my-div" /></body></html>`);
var document = jsDomDoc.window.document;
var elem = document.getElementById("my-div");
console.log(elem);
console.log(jsDomDoc.serialize());
//returns null