connect_to_db.js

//DB and authentication

mongo.connect(process.env.DATABASE, (err, cluster) => {

  if(err) {

    console.log('Database error: ' + err);

  } else {

    //connecting to the cluster

    console.log('Successful database connection');

    

    //connetcing to the database

    const db = cluster.db(DATABASE_NAME);

  }

    

 });