Promises and streams using Bluebird.js and Twitter stream

Question

I am new super new to Promises and Node and am curious about using promises with streams. Can I promisify a stream? Using Bluebirdjs and the Twit module I have the following:

Answer 1

Can I promisify a stream?

No. While a stream continuously emits events, a promise resolves only once. They have completely different semantics (even if both use asynchronous callbacks).

You can make a promise for a stream that ends, see the EventEmitterPromisifier example in BlueBirds documentation - but that's not what your twitter stream example does.

Running this code does not log a tweet and no error is thrown.

Because T.stream() is a synchronous factory function that returns a stream object. You don't need - you cannot - use streamAsync, as it will never invoke the implicitly passed callback.