I've become a skilled user of jQuery's new and amazing Deferred module, and as I'm easing into using more of Node.js, I find myself wanting something exactly like it in much of my Node.js programming: callbacks that block until a collection of promises devolves to resolved, with the freedom to add to the array on-the-fly as the task grows in complexity-- such as when one processes a tree of data, the size of which is not known at the start of the task.
node-fibers requires a whole new executable,
Q()'s interface is just damned confusing, and
node-step only seems to handle single-task synchronizations.
Has someone just ported jQuery's Deferreds to a node-ready form? It doesn't seem that unlikely, nor does it seem that Deferreds is dependent upon DOM-available features, but I haven't found a server-side equivalent.