I wanted the functionality that the yieldsAsync() method provides.
I found it in the issues from a pull request but not in the documents.
Ouch... If I could get a sample of doc source, I would write the docs.
yieldsAsync methods do the same thing as their correpsonding yields counterparts except, they defer yielding using setImmediate or setTimeout(0), thus yielding asynchronously.
Doc source: http://github.com/cjohansen/sinon-web/
It's in the docs now. Closing issue.