text: const mongoose = require('mongoose');
  const Student = mongoose.model('Student');
  const Class = mongoose.model('Class');
  // const nodemailer = require('nodemailer')
  var jwt = require('jsonwebtoken');
  
  const createclass= async function(data){
      //let student= await Student.findOne({_id:data.idHocSinh});
     
    
  }
   module.exports={
  
   }