How can I exclude .min.css files from ack-grep seach?

I have the syntax for adding a new ack-grep

filetype:

$ ack-grep --type-add=min=.min.js,.min.css --help types | grep min
    --[no]min          .min.js .min.css

      

        
        
        
      

    

But the problem is that it never seems to match any files, perhaps because my extensions ( .min.js

/ .min.css

) have 2 dots in them.

$ touch test.min.js
$ ack-grep --min -f
    [nothing returned]

      

        
        
        
      

    

So how can I make it ack-grep

recognize a file type with 2 dots in it? And if this is not possible, then how can I search for js and css files without matching shorthand versions?