Using native ES6 promises with MongoDB

Question

I\'m aware that the Node driver for Mongo can be promisified using external libraries. I was curious to see if ES6 promises could be used with MongoClient.connect

Answer 1

There is nothing to get around, this is the expected behavior. cursor.count() returns a promise, if you want the value, you need to use .then, e.g.

DbConnection({}).then(
 db => {
    let cursor = db.collection('bar').find();
    return cursor.count();
  }
}).then(
  count => {
    console.log(count);
  },
  err => {
    console.log(err);
  }
);

or simplified

DbConnection({}).then(db => db.collection('bar').find().count()).then(
  count => console.log(count),
  err => console.log(err)
);