*/ abstract class LessUtils extends CssUtils { const REGEX_IMPORTS = '/@import(?:-once)? (?:\([a-z]*\) )?(?:url\()?(\'|"|)(?P[^\'"\)\n\r]*)\1\)?;?/'; const REGEX_IMPORTS_NO_URLS = '/@import(?:-once)? (?:\([a-z]*\) )?(?!url\()(\'|"|)(?P[^\'"\)\n\r]*)\1;?/'; const REGEX_COMMENTS = '/((?:\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)|\/\/[^\n]+)/'; }