Nodejs 中如何判断操作系统平台

var detectPlatform = function (url) {
  switch (process.platform) {
    case "darwin": //unix 系统内核
      console.log('darwin ');
      break;
    case "win32": //windows 系统内核
      console.log('win32');
      break;
 
  }
};
 
console.log(detectPlatform())