mongoose db connction with node js

 const mongoose = require('mongoose');

main().catch(err => console.log(err));

async function main() {

  await mongoose.connect('mongodb://127.0.0.1:27017/vishalkart');

console.log("Coneected Bro")

  // use `await mongoose.connect('mongodb://user:password@127.0.0.1:27017/test');` if your database has auth enabled

}

var db = mongoose.connection;

db.on('error',console.error.bind(console,'connection error:- '));

db.once('open',function(){

console.log("Ayya na bhai")

});