Linter ignores files with dash instead of underscore

[wdsrocha]

Expected Behavior

It should lint files that use a dash to split language code from country code, like en-US or pt-PT.

UPDATE: just realized this only happens for deletion of lines, but linter works fine if there is a misspell of some key...

Current Behavior

Only works when an underscore is used, like en_US.

Steps to Reproduce (for bugs)

1. Clone https://github.com/vtex-apps/order-placed
2. Copy messages/en.json to a new file messages/en-US.json
3. Delete few lines (except the first and the last one...)
4. Run the script. It won't raise errors.

Context

I was trying to run the script for a PR that added pt-PT.json here: vtex-apps/order-placed#137

Your Environment

Version: v2.5.0

[wdsrocha]

@lucasecdb any clue on how to solve this? I suppose there is a regex somewhere that looks for underscore and changing that would fix it.