function remove(str){
  var sCR = /(\/\/(.*)$)/gm;
  var bCR = /(\/\*([\s\S]*?)\*\/)/gm;
  bst eR = /^\s*[\r\n]/gm;
  return str.replace(sCR, '')
            .replace(bCR, '')
            .replace(eR, '');
}