sandbox-memory-leak references https://auth0.com/blog/four-types-of-leaks-in-your-javascript-code-and-how-to-get-rid-of-them/ http://stackoverflow.com/questions/11930050/finding-js-memory-leak-in-chrome-dev-tools https://groups.google.com/forum/#!topic/google-chrome-developer-tools/TTVmU-WnqTw