node.js - nodejs debug问题

Question

我现在开发环境是把nodejs装在centos虚拟机上。通过端口映射的方式访问虚拟机，虚拟机的网络连接是nat类型。
目前运行node debug的时候发现debugger的端口号提示有点奇怪。如下图。

尴尬的是运行node-inspector可以运行，但是一打开浏览器就 崩溃报错信息如下。

求高手解答，现在完全蒙蔽状态。

Answer 1

I am also a beginner...
Look at the error message, ref is undefined. Did you not define ref in the code or did you spell it wrong?

Answer 2

The default port of the debugger is 5858. If the error is reported, it means there is a problem with the code. Please check it carefully.