如何从以下mongo对象中过滤出数据库

show dbs;

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

async function listDatabases() {
  const uri = "your_mongodb_connection_string";
  const client = new MongoClient(uri);

  try {
    await client.connect();
    const adminDb = client.db().admin();
    const result = await adminDb.listDatabases();
    console.log(result.databases.map(db => db.name));
  } finally {
    await client.close();
  }
}

listDatabases().catch(console.dir);

db.yourCollection.find({ yourField: "yourValue" });

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

async function findDocuments() {
  const uri = "your_mongodb_connection_string";
  const client = new MongoClient(uri);

  try {
    await client.connect();
    const database = client.db('yourDatabaseName');
    const collection = database.collection('yourCollectionName');
    const query = { yourField: "yourValue" };
    const cursor = collection.find(query);

    await cursor.forEach(doc => console.log(doc));
  } finally {
    await client.close();
  }
}

findDocuments().catch(console.dir);

npm install mongodb