Run PowerShell as Administrator：
npm install -g npm-windows-upgrade
Set-ExecutionPolicy Unrestricted -Scope CurrentUser -Force //改变Script执行权限
npm-windows-upgrade
参考：https://github.com/felixrieseberg/npm-windows-upgrade
如何升级npm自身
移动互联网、软件开发话题及似水流年中的浪花朵朵
Run PowerShell as Administrator：
npm install -g npm-windows-upgrade
Set-ExecutionPolicy Unrestricted -Scope CurrentUser -Force //改变Script执行权限
npm-windows-upgrade
参考：https://github.com/felixrieseberg/npm-windows-upgrade