Ember and Dead Code elimination / Tree shaking

I have an app that has a dependency on a few bigger libraries and ember addons. From those dependencies, I use a very small subset of functions and components so I was surprised that in the final output is everything. I would like to stripp off everything that's not used.

Looking over the internet, I wasn't able to find any useful resource about this topic. What's the recommended setup for dead code elimination or tree shaking for Ember app in 2017?

PS: I know that Tree shaking is a bit different than dead code elimination, but the purpose is basically the same.