How to disconnect when connection is idle with NodeJS driver?

Working with Data Node.js Frameworks
1

The following code opens a connection as soon as the first api request comes in and prints out “connection created”. But it is never closed.

    this.client = await MongoClient.connect(this.config.connectionURL, {
      minPoolSize: 0,
      maxPoolSize: 10,
      maxIdleTimeMS: 5000,
    });

    this.client.on('connectionClosed', () => {
      console.log('connection closed');
    });
    this.client.on('connectionCreated', () => {
      console.log('connection created');
    });