new Date() broken in IE8

[riophae]

var date = new Date(new Date());
// expected to be a valid `Date` Object, got `new Date(NaN)` in IE8 instead

IE8 (with es5-shim):

IE8 (without es5-shim):

Chrome:

[ljharb]

Does this happen with just new Date() as well?

[riophae]

@ljharb No, just new Date() is fine.

[ljharb]

hm, interesting, thanks! I'll fix this ASAP.

Curious tho, how did you discover this? Passing a date object into new Date is super odd.

[riophae]

Haha, we were to copy a Date object by passing it into new Date :D

[ljharb]

not new Date(+date)? :-)