Mongo Connect m NodejS

  MongoDbConnect.js

const mongodb = require('mongodb');

const MongoClient = mongodb.MongoClient;

let _db;

const mongoConnect = callback => {

MongoClient.connect(

'mongodb+srv://ajtest:oSeYpAjTix3XsmBU@cluster0-b2p29.mongodb.net/test?retryWrites=true'

)

.then(client => {

console.log('Connected!');

_db = client.db();

callback();

})

.catch(err => {

console.log("Error",err);

throw err;

});

};

const getDb = () => {

if (_db) {

return _db;

}

throw 'No database found!';

};

exports.mongoConnect = mongoConnect;

exports.getDb = getDb;