安装vue-cli是npm报错：
PS D:\phpStudy2018\PHPTutorial\WWW\ming\vue_bus> npm install -g @vue/cli
npm ERR! code E500
npm ERR! 500 Internal Server Error: debug@^4.1.0
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\ym\AppData\Roaming\npm-cache_logs\2019-05-24T03_39_28_681Z-debug.log
解决办法：
1，配置npm包地址
npm config set registry https://registry.npmjs.org/
2，检查地址
curl https://registry.npmjs.org/
3，清楚npm缓存
npm cache clean --force
再重新npm安装
