Conecte-se a um MongoDB database usando o Node.js 3.3.2

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npm install mongodb

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

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/**
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* Connection URI. Update <username>, <password>, and <your-cluster-url> to reflect your cluster.
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* See https://docs.mongodb.com/ecosystem/drivers/node/ for more details
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*/
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const uri = "mongodb+srv://<username>:<password>@<your-cluster-url>/sample_airbnb?retryWrites=true&w=majority";       

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const client = new MongoClient(uri);

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await client.connect();

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await listDatabases(client);

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try {
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    await client.connect();
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    await listDatabases(client);
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} catch (e) {
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    console.error(e);
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}

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finally {
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    await client.close();
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}

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main().catch(console.error);

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async function main(){
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    /**
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     * Connection URI. Update <username>, <password>, and <your-cluster-url> to reflect your cluster.
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     * See https://docs.mongodb.com/ecosystem/drivers/node/ for more details
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     */
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    const uri = "mongodb+srv://<username>:<password>@<your-cluster-url>/test?retryWrites=true&w=majority";
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    const client = new MongoClient(uri);
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    try {
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        // Connect to the MongoDB cluster
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        await client.connect();
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        // Make the appropriate DB calls
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        await  listDatabases(client);
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    } catch (e) {
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        console.error(e);
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    } finally {
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        await client.close();
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    }
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}
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main().catch(console.error);

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async function listDatabases(client){
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    databasesList = await client.db().admin().listDatabases();
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    console.log("Databases:");
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    databasesList.databases.forEach(db => console.log(` - ${db.name}`));
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};

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Databases:
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 - sample_airbnb
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 - sample_geospatial
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 - sample_mflix
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 - sample_supplies
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 - sample_training
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 - sample_weatherdata
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 - admin
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 - local