I've been using promises for my work lately, and I really like them. This doesn't have it, but one construct I use is the `when` function. It's useful for situa

I've been using promises for my work lately, and I really like them. This doesn't have it, but one construct I use is the `when` function. It's useful for situations that may return non-promise values, and works like this: Promise.when(func(), function(val) { alert(val); }); So if `func` returns a normal value, the cb runs immediately. If it returns a promise, the cb runs on fulfillment.