[aizatto]

Ditto, this is the same thing I did for a 16,000+ line app.

I used eslint ( https://eslint.org ) and prettier ( https://prettier.io ), and using airbnb's JavaScript Style Guide as a reference point ( https://github.com/airbnb/javascript ), I would enable rules one by one. Then slowly rule by rule (commit by commit) I would clean up the code base.

[_pdp_]

Our modules currently are at 96398 lines of code (I am not counting the apps). It is still maintainable and perfectly understandable. Everything is split into module though and then every module has its own tests and its own examples. We lack proper documentation. It is not a problem yet but it could turn out to be in the future.