Question

I have an API that returns a promise from a deferred object.

The problem is that the caller is supposed to behave synchronously. As an option to present to the team, how would I make the calling function behave synchronously?

var foo = function() {
     var promise = returnsPromise();
     promise.done().fail();

     // insert magic here

     // function returns when either done() or fail() is completed.
}

Answer 1

If you really need to wait for the deferred to resolve at that point, just do exactly that as you would do it without jQuery:

while (!promise.isResolved() && !promise.isRejected()) { }