study_express/9-sonyo/server/app/model/users.js

// {app_root}/app/model/user.js
module.exports = (app) => {
  const mongoose = app.mongoose;
  const Schema = mongoose.Schema;

  const UsersSchema = new Schema({
    userName: { type: String },
    password: { type: String },
    userEmail: { type: String },
    id: { type: String },
  });
  
  return mongoose.model('Users', UsersSchema);
};