check if mongodb DB exist at time of connection - mongodb

Question

I am new to mongodb and mongoose. I used the below code from internet. I never created the database MEANSTACK which i am referring below. When saving the record it never complained that DB or collection does not exist like it used to happen in MYSQL. How do i make sure that DB or collection exists before doing any operation and its not created automatically.
var mongoose = require( 'mongoose' );
var dbURI = 'mongodb://localhost/MEANSTACK';
mongoose.connect(dbURI);
mongoose.connection.on('connected', function () {
console.log(chalk.green('Mongoose connected to ' + dbURI));
});
mongoose.connection.on('error',function (err) {
console.log(chalk.red('Mongoose connection error: ' + err));
});
mongoose.connection.on('disconnected', function () {
console.log(chalk.red('Mongoose disconnected'));
});

Answer 1

Sry for writing my note as an answer. I can't write comments because my repo is below 50. When you run your server and it runs with no mistakes, that means your database var dbURI = 'mongodb://localhost/MEANSTACK' exists or at least your mongodb server is accessible. Otherwise you would get an error:
failed to connect to server [localhost:27017] on first connect
And additionally mongoose creates a db if it doesn't exist on server run, so it do the check you need on server run like "out of the box"