const mongodb = require('mongodb'); const MongoClient = mongodb.MongoClient; let database; async function connectToDatabase() { const client = await MongoClient.connect('mongodb://127.0.0.1:27017') database = client.db('BDE'); } function getDb() { if (!database) { throw { message: 'You must connect first!' }; } return database; } module.exports = { connectToDatabase: connectToDatabase, getDb: getDb, };