Marionette Zombie Detector

Helps find zombie views in Marionette

Install

$ npm install marionette-zombie-detector

Install the zombie detector before you use any Marionette Views:

require('marionette-zombie-detector').install(require('backbone.marionette'));

Watch for Zombies

Now, open your console and look for "Zombie Detected" information messages.

Quick Demo

Watch the console as zombies are detected:

Note

This code is not intended for production purposes, only for finding zombies during development.

How does it work?

The zombie detector uses two methods of detection:

1. Monitor the el element on each Marionette View. When the el is detached from the DOM, it ensures that the corresponding View has been destroyed and logs a leak if it has not.
2. Tracks all EventTarget addEventListener and removeEventListener invocations and ensures that when the View is removed from the DOM, all the event listeners have been removed from the el element and all it's child elements. In other words, when the view's subtree is removed from the DOM, no event listeners remain on the detached subtree.

Licence

MIT