How do you prevent memory leak in Babylon.js?

[fateriddle 3]

I'm coding using babylonjs + reactjs. And I suspect there's memory leak somewhere in the code as stuff gets laggy over time.

So what's the 101 list that I should check? 

I've imported a few assets, then created instance of them, also I'm creating new mesh as bullet everytime user click shoot button. 
In componentWillUnmount, I dispose every asset, and that's all I did. Is there something missing?

[Deltakosh 4315]

So you're using React

The thing to do is to use the F12 memory profiler. Run your app, go to the profiler and capture a snapshot. Then do stuff and go to a state where you think you removed everything then do a second snapshot.

You can then compare them and see which objects were created and not removed