const { MongoClient } = require('mongodb');
const assert = require('assert');

// Connection URL
const url = 'mongodb://localhost:27017';

// Database Name
const dbName = 'myproject';

// Create a new MongoClient
const client = new MongoClient(url);

async function main() {
  // Use connect method to connect to the Server
  await client.connect();
  
  try {
    // content here
  } finally {
    await client.close();
  }
}

main().catch(console.dir);

const { MongoClient } = require('mongodb');
const assert = require('assert');

// Connection URL
const url = 'mongodb://localhost:27017';

// Database Name
const dbName = 'myproject';

// Create a new MongoClient
const client = new MongoClient(url);

// Use connect method to connect to the Server
client.connect().then(async function() {
  try {
    // content here
  } finally {
    await client.close();
  }
});