[Webkit-unassigned] [Bug 229826] [JSC] Implement Temporal.Instant

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=229826

--- Comment #4 from Philip Chimento <philip.chimento at gmail.com> ---
The WIP patch doesn't cover string parsing yet. Additionally one corner that I intentionally cut was to store epochNanoseconds as a double, so I'll have to go back and change that. It actually requires at least 74 bits to store with the required precision.

I haven't decided yet if it's best to store epochNanoseconds as a JSBigInt in TemporalInstant, or, e.g. store epochMilliseconds and up to 1e6 nanoseconds as separate integers, or even store epochMilliseconds as a double (using that convenient WTF::Seconds type) and nanoseconds separately.

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