Accept a Promise for a mongo DB instance?

[bttmly]

Would you be open to a PR that would accept a promise that resolves to a mongo DB instance? The implementation would probably look something like the following in the constructor:

// ...
} else if (options.dbPromise) {
  dbPromise
    .then(db => this.handleNewConnectionAsync(db))
    .catch(err => this.connectionFailed(err))
}  // ...

[jdesboeufs]

Yes!

[Redsandro]

This would be very much appreciated. In node-mongodb-native 2+ you connect without using a db instance and only have access to the db in a callback. So accepting a promise for the db would prevent us from having to beat around the bush. 👍