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
  (use git history for the file as this warning may be obsolete):

  * bc63ecca support "i" in attribute selector
  * 2468784e fix crashing on unclosed calc() at eof
  * 3287b79f Support :any(), :-webkit-any(), :-moz-any()
  * 4684016a Support @supports inside @-moz-document