I've come to be a big fan of async.auto which allows me to break a large task down into smaller functional steps, define their required dependencies on each oth

I've come to be a big fan of async.auto which allows me to break a large task down into smaller functional steps, define their required dependencies on each other, and then just let async take care of the magic of executing the operations in the correct order, and parallelizing operations when possible. Do any of you promise and/or generator users know of a good equivalent to async.auto? I feel like promises and generators have potential but much of my code is based on async.auto and I feel like it would be complicated and painful to try to rewrite that with promises and generators.