clean eslint rule warnings/errors

[ricardo-devis-agullo]

This is just a cleanup of code following eslint errors/warnings present. Some notes:

1. There's still two warnings about use of console. I left them since I'm not sure if they are a problem or not (they were two more but those I added an exception rule since they are on logger files, so makes sense they reference console.log)
2. I disabled no-confusing-arrow. Trying to refactor it would conflict with the also enabled rule arrow-body-style to not have a body where you only return, so I decided to remove the first one since there's not a lot of cases anyways.
3. I removed two TODO (per eslint rule) about adding logger and watch to the compiler, but added and issue about it (not going to reference it so it doesn't get closed when merging this)