Rick Waldron (2013-07-17T20:04:23.000Z)
domenic at domenicdenicola.com (2013-07-24T00:41:12.822Z)
Can you explain why startDate was specified was a Date object? I've just read the relevant portions of specification and I don't see any compelling rationale. I did see the word "timestamp" used in a number of places, but that contradicts the value type of event.timeStamp, which is |readonly attribute DOMTimeStamp|—I make this comparison, because I would assume all things described as "timestamp" would have the same value type. If startDate were `readonly attribute DOMTimeStamp` (or more appropriately: `{[[Value]]: ..., [[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: false}`), then user code could create a Date object if it needed to or calculate the difference between some event's timeStamp and the startDate, etc.