memory leaks

index.html

<button id="start">Start</button>
<script>
  var button = document.getElementById('start');
  var leaker = [];
  button.addEventListener("click", function() {
    for (var i = 0; i < 1000000; i++) {
      leaker.push(document.createElement("div"));
    }
  });
</script>

memory-leak.js

var browserPerf = require('browser-perf');
var Q = require("Q");
var url = process.argv[2];
var options = {
  selenium: 'http://localhost:9515',
  browsers: [{
    browserName: 'chrome',
    loggingPrefs: {
      performance: 'ALL'
    }
  }],
  actions: waitForRender.bind(null, url),
  // metrics: [memoryMetric()]
};

browserPerf(url, function(err, results) {
  console.log(results);
}, options);

function waitForRender(url, browser) {
  return browser.get(url)
    .then(function() {
      return browser.elementByCss("#start");
    }).then(function(el) {
      return el.click();
    }).then(function() {
      return browser.execute(":takeHeapSnapshot");
    }).then(function(snap) {
      console.log("snap:", snap);
      debugger;
    });
}