Connect to MongoDB and insert one data

insert.js

const mongodb = require('mongodb')
const MongoClient = require('mongodb').MongoClient
const url = 'mongodb://localhost:27017/mydb'

MongoClient.connect(url, function(err, db){
    if (err) throw err;
    console.log('Connected to mydb')

    const dbo = db.db('mydb')
    
    const user = {
        username: 'jonpostel',
        name: 'Jon Postel',
        email: '[email protected]'
    }

    dbo.collection('users').insertOne(user, function(err, result){
        if (err) throw err;

        console.log('1 user inserted')

        db.close()
    })

})