This spec is total overkill. First, you don't need to conflate a pubsub interface with async streams. Two totally different problems. Second, async streams are

This spec is total overkill. First, you don't need to conflate a pubsub interface with async streams. Two totally different problems. Second, async streams are easy: http://stackoverflow.com/questions/21143996/asynchronous-iterator http://stackoverflow.com/questions/21143996/asynchronous-ite...