Exclude on delete

[moisesrodriguez]

I'm trying to do this:

{dest: 'assets/', exclude: '*.js', flipExclude: true, action: 'delete'}

or

{dest: 'assets/', exclude: './*.js', flipExclude: true, action: 'delete'}

but it will not delete anything

It only deletes when I do this:

{dest: 'assets/', exclude: '**/*.js', flipExclude: true, action: 'delete'}

but I don't want it to go into subfolders. Any pointers into what I'm doing wrong?