Folding EitherT[Future, Throwable, A]

Question

Cannot figure out most idiomatic way to kinda fold EitherT[Future, Throwable, A] to Future[A], where left side of Either will be represented as failed Future.

Answer 1

Is a simple straight-forward fold not good?

 foo.fold(Future.failed, Future.successful).flatten

Answer 2

You could use fold and throw whatever Throwable you find on the left side

val foo: EitherT[Future, Throwable, A] = ???

import cats.instances.future._

foo.fold(throw _, identity)