Nodejs e MongoDB

main.js

'use strict'

const Model = require('model')
const mongoose = require('mongoose')
const log = require('ololog').noLocate

mongoose.connect(
  'mongodb://localhost/mydb',
  { useNewUrlParser: true, useCreateIndex: true },
  function (err) {
    if (err) throw err
  }
)

let main = {

  start(data) {

    let { n: name, k: t } = data
    let { x: final } = t
    if (final) {
      Model.findOne({ name: name }, (err, obj) => {
        if (err) throw err
        if (obj == null) {
          let model = new Model()

          model._id = new mongoose.Types.ObjectId()
          model.name = name
          model.t.push(t)

          model.save(err => {
            if (err) throw err
            let id = model._id
            log.info('Cadastrado: ', id)
          })
        } else {
          obj.t.push(t)

          Model.updateOne(
            { _id: obj.id },
            { $set: { t: obj.t } },
            (err, doc) => {
              if (err) throw err
              log.info('Atualizado: ', obj.id, ' Name: ', name)
            }
          )
        }
      })
    }

  }
}

main.start()

model.js

const mongoose = require('mongoose')
const modelSchema = mongoose.Schema({
  _id: mongoose.Schema.Types.ObjectId,
  name: { type: String, index: true, required: true },
  t: []
})
const Model = mongoose.model('Model', modelSchema)

module.exports = Model