Babel deoptimises styling of big files in ember.js app

I have an ember.js app with a big file that started to have this problem:

[Babel: notes > applyPatches][BABEL] Note: The code generator has deoptimised the styling of /home/user/code/notes-frontend/notes/components/model-wps/edit.js as it exceeds the max of 500KB.

Although the functionality is not affected, this makes it impossible to debug as Babel won't print the file nicely.

I've seen that setting babel compact option to false should solve my problem, but I can't make that configuration work in my project.