$ gulp
[18:31:16] Failed to load external module @babel/register
[18:31:16] Requiring external module babel-register
C:\users\astros\file\es6pro\tasks\util\args.js:40
.argv(); /**
 ^

出現以上原因是由又gulp的版本過高導致的，檢視版本為3.9.1

降級為3.9.0則好了

$ gulp -v
[18:33:29] Failed to load external module @babel/register
[18:33:29] Requiring external module babel-register
[18:33:29] CLI version 3.9.1
[18:33:29] Local version 3.9.1
 

降至

sudo rm -rf /usr/local/lib/node_modules/gulp   
sudo cnpm i -g [email protected]