Window load event in smokestack?

test-smokestack.js

#! /usr/bin/env node

var Readable = require('stream').Readable;
var browserify = require('browserify');
var smokestack = require('smokestack');

var setup = new Readable();
setup.push((function() {
  var content = document.createElement('div');
  content.appendChild(document.createTextNode("So far so good"));
  document.body.appendChild(content);

  console.log('Try both window.onload and window.addEventListener');

  window.onload = function() {
    console.log('Hello from window.onload');
  };

  window.addEventListener("load", function () {
    console.log('Hello from addEventListener');
  });

}).toString().slice(13,-1));
setup.push(null);

browserify(setup)
  .bundle()
  .pipe(smokestack())
  .pipe(process.stdout);