lib/parse/index.js
function match(re) {
    var m = re.exec(css);
    if (!m) return;
    var str = m[0];
    updatePosition(str);
    css = css.slice(str.length);
    return m;
  }
function match(re) {
    var m = re.exec(css);
    if (!m) return;
    var str = m[0];
    updatePosition(str);
    css = css.slice(str.length);
    return m;
  }
function match ( re ) { var m = re . exec ( css ) ; if ( ! m ) return ; var str = m [ 0 ] ; updatePosition ( str ) ; css = css . slice ( str . length ) ; return m ; }
Match `re` and return captures.
Match re and return captures .