BrightFutures | Write great asynchronous code in Swift using futures | Reactive Programming library

When you create the actual publisher with let future, append the .share operator, so that your two subscribers subscribe to a single split pipeline.

EDIT: As I've said in my comments, I'd make some other changes in your pipeline. Here's a suggested rewrite. Some of these changes are stylistic / cosmetic, as an illustration of how I write Combine code; you can take it or leave it. But other things are pretty much de rigueur. You need Deferred wrappers around your Futures to prevent premature networking (i.e. before the subscription happens). You need to store your pipeline or it will go out of existence before networking can start. I've also substituted a .handleEvents for your second subscriber, though if you use the above solution with .share you can still use a second subscriber if you really want to. This is a complete example; you can just copy and paste it right into a project.

There should be protocol that allows dependency injection.

Let it be AuthClient. It should have all properties that we will use from AWSMobileClient. And declare an extension.