One strategy is to be adapter friendly by sticking to conventions. By adapter friendly i mean promisify and event emitter to async iterator adapter. And vice v

One strategy is to be adapter friendly by sticking to conventions. By adapter friendly i mean promisify and event emitter to async iterator adapter. And vice versa. And by conventions i mean things like error first. Then it might be possible to just have a .promises property that expose the api via the adapter. So that you can support many paradigms, with minimal changes to the code base. With paradigms I mean different ways to work with async, there are probably 20 different ways that I know of if I also include ways how to run things in parallel. My personal opinion is that promises should have stayed in userland (not in ES spec) to give competing standards a chance to compete. Those wanting async/await patterns could have used co routines/generators.