1. Until https://github.com/CSSLint/parser-lib/issues/229 is fixed, manually replace:

  while (lt !== Tokens.COMMA && lt !== Tokens.S && lt !== Tokens.RPAREN) {

  in "_function: function()" with

  while (lt !== Tokens.COMMA && lt !== Tokens.S && lt !== Tokens.RPAREN && lt !== Tokens.EOF) {

2. Apply our hacks unless supported natively:

  * Support :any(), :-webkit-any(), :-moz-any()
  * Support @supports inside @-moz-document