ERROR errno -4048，Error: EPERM: operation not permitted

npm install 报错（npm ERR! errno -4048，Error: EPERM: operation not permitted,）解决方法

清理缓存：

npm  cache clear --force

---

再次执行并安装mongoose

引入：

var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/demo',{ useNewUrlParser: true });
var db = mongoose.connection;

db.on('error',function(){
	console.log('failure:'+error);
});
db.on("open",function(){
	console.log("数据库连接成功");
});
db.on("disconnected",function(){
	console.log("数据库连接断开");
});
module.exports=db

mongooseAPI