[css-tokenize] unfinished business

[kyle-cyberprairie]

I have tried running the example input but it just outputs like below. Can someone tell me what I'm doing wrong?

$ doiuse --browsers "ie >= 9, > 1%, last 2 versions" style.css
[css-tokenize] unfinished business [
  [ 'root' ],       [ 'comment' ],
  [ 'string', 39 ], [ 'comment' ],
  [ 'string', 39 ], [ 'comment' ],
  [ 'string', 39 ], [ 'comment' ],
  [ 'string', 39 ], [ 'comment' ],
  [ 'string', 39 ], [ 'comment' ],
  [ 'string', 39 ], [ 'comment' ],
  [ 'string', 39 ], [ 'comment' ],
  [ 'string', 39 ], [ 'comment' ],
  [ 'string', 39 ], [ 'comment' ],
  [ 'string', 39 ], [ 'comment' ],
  [ 'string', 39 ], [ 'comment' ],
  [ 'string', 39 ], [ 'comment' ],
  [ 'string', 39 ], [ 'comment' ]
]

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