Exclude folders from FileWatchService

[TedisAgolli]

Hello!
I am wondering if there is a way to exclude a specific folder from being watched by FileWatchService
My setup specifically has a react folder under app/assets. Changes being made there are compiled by webpack. But those changes also cause my Play App to recompile, which takes longer.

1. It is possible for me to move the react folder out of app but it requires changing a lot of other things, which I would rather not do.
2. I have tried overriding the watch method by dynamically modifying filesToWatch.
   filesToWatch by default contains ['app']. I have tried modifying it to include every other folder inside app that is not react
   So it would end up looking like this
   ['app/controllers', 'app/forms', 'app/jobs'....] etc
   This isn't too bad but I'm wondering if creating a watcher for each of these folders is more expensive than just watching the top level folder.

What I would ideally like to do is be able to pass something to an exclude method that just ignores folders which contain a certain string in their path.

Thank you in advance, and hope my explanation was clear.