[webkit-changes] [WebKit/WebKit] 4bfba2: [JSC] Update Intl.DurationFormat based on Jan ECMA...

[Yusuke Suzuki]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 4bfba24bc18e04141df7181b750dcebea75e3845
      https://github.com/WebKit/WebKit/commit/4bfba24bc18e04141df7181b750dcebea75e3845
  Author: Yusuke Suzuki <ysuzuki at apple.com>
  Date:   2023-01-24 (Tue, 24 Jan 2023)

  Changed paths:
    M JSTests/stress/intl-durationformat-format-to-parts.js
    M JSTests/stress/intl-durationformat.js
    M Source/JavaScriptCore/runtime/IntlDurationFormat.cpp
    M Source/JavaScriptCore/runtime/IntlDurationFormatPrototype.cpp

  Log Message:
  -----------
  [JSC] Update Intl.DurationFormat based on Jan ECMA402 consensus
https://bugs.webkit.org/show_bug.cgi?id=251115
rdar://104582024

Reviewed by Mark Lam.

This patch upgrades Intl.DurationFormat implementation to align it to Jan ECMA402 meeting consensus.
The changes are three-fold.

1. format and formatToParts should accept String too. And throwing a range error when string is not valid[1].
2. formatToParts should use singular form of unit names instead of plural form.
3. formatToParts should split each unit's representation to make numeric part and unit part accessible[3]. Previously,
   we just grouped "1 hour" as "hour" part. But after this, we split it into "1" integer, " " literal, and "hour" unit,
   with unit = "hour".

[1]: https://github.com/tc39/proposal-intl-duration-format/issues/128
[2]: https://github.com/tc39/proposal-intl-duration-format/issues/44
[3]: https://github.com/tc39/proposal-intl-duration-format/issues/55

* JSTests/stress/intl-durationformat-format-to-parts.js:
(Intl.DurationFormat.shouldBe.JSON.stringify.fmt.formatToParts):
(Intl.DurationFormat.shouldBeOneOf):
* JSTests/stress/intl-durationformat.js:
(test):
* Source/JavaScriptCore/runtime/IntlDurationFormat.cpp:
(JSC::collectElements):
(JSC::IntlDurationFormat::formatToParts const):
* Source/JavaScriptCore/runtime/IntlDurationFormatPrototype.cpp:
(JSC::JSC_DEFINE_HOST_FUNCTION):

Canonical link: https://commits.webkit.org/259317@main