eslint@5 now validate rest parameters for valid file patterns

[royriojas]

Before eslint@5 we were abusing the fact that parameters passed after -- were ignored by the cli engine. Now there is a validation for valid file patterns and since that one doesn't match now it will complaint on those arguments we pass there.

The easier way to fix this is to use only ENV variables.

[royriojas]

For now we're using ENV variables only.