text: // get an instance of mongoose and mongoose.Schema
  const mongoose = require('mongoose');
  const Schema = mongoose.Schema;
  
  // set up a mongoose model and pass it using module.exports
  module.exports = mongoose.model('User', new Schema({
    email: {
      type: String,
      required: true,
      unique: true
    },
    password: {
      type: String,
      required: true
    },
    salt: {
      type: String,
      required: true
    },
  }));
  