> > The difference would only surface when testing that case. > > Not quite. You can still have thenables that call `onFulfilled` with > another thenable, to any depth. You can also insert a real promise at the > end of any-length thenable chain. I understand now. Essentially, in the test you create an ad-hoc "promise" whose value is a promise, by virtue of it calling its `then` callback with another promise. So A+ 1.1 does present an opinion on `then` semantics for promises-of-promises. FWIW, I think the DOMFuture behavior is more intuitive in this particular edge case. I also think that promises-for-promises are an edge case best avoided at all costs. { Kevin }Received on Friday, 26 April 2013 20:12:16 UTC
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