Node中 mongoose報(bào)錯(cuò)：TypeError: schema is not a constructor？

問(wèn)題描述

用mongoose創(chuàng)建了一個(gè)學(xué)生Schame，但是運(yùn)行的時(shí)候報(bào)錯(cuò)，錯(cuò)誤在第三行的Schema；

TypeError: schema is not a constructor

看了代碼沒(méi)找到錯(cuò)，請(qǐng)大家?guī)兔纯?，謝謝！

相關(guān)代碼

var mongoose = require('mongoose'),
    Schema = mongoose.Schema;
const courseInf = new Schema({
    teacher:String,
    courseName:String
});
const student = new Schema({
    name:String,                //姓名
    class:String,                //班級(jí)
    stunum:String,                //學(xué)號(hào)
    oldpassword:String,           //舊密碼
    newpassword:String,           //新密碼
    phonenum:String,              //手機(jī)號(hào)
    course:[courseInf]           //課程
});

module.exports.stu = mongoose.model('student',student);