LGTM
*From: *Frank Tang
*Date: *Tue, May 14, 2019 at 5:33 PM
*To: *blink-dev, v8-users, , Adam Klein, Sathya
Gunasekaran, Jakob Kummerow, Nebojša Ćirić
Contact emails ft...@chromium.org,js...@chromium.org Explainer
> https://github.com/tc39/ecma402/pull/175 Design docs/spec Specification:
> https://github.com/tc39/ecma402/pull/175
> https://github.com/tc39/ecma402/pull/175 TAG review No need for TAG
> review since the TC39 / ECMA402 process provide oversight. Summary Allows
> calendar and numberingSystem to be specified in the options bag of the
> DateTimeFormat and NumberFormat constructors. Motivation One use case for
> these options would be, when working with locales which have two numbering
> systems and calendars in use--the UA default may be the non-Western one,
> but in some contexts, it may be appropriate to use the Western one.
> Currently, without the patch, it would be necessary to parse the BCP 47
> language tag in the application. This feature make it simpler for the
> developer. See https://github.com/tc39/ecma402/pull/175 for more details.
> Risks
> Interoperability and Compatibility The PR in
> https://github.com/tc39/ecma402/pull/175 is in last stage to be merged
> into ECMA402. *Firefox*: No public signals *Edge*: No public signals
> *Safari*: No public signals *Web developers*: No signals Ergonomics
> Small. Both Intl object already provide the underline format functionality
> by reading calendar ("ca") and numberingSystem ("nu") from the locale. This
> feature only add a tiny option reading step Activation Low. A lot of
> users already use these two API . New Javascript code which follow this
> change running on an old version of browser which does not support this
> browser will format the number and/or date in different result. But users
> should still be able to understand these output. Security None
> Debuggability No additional debugging support required. Will this feature
> be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS,
> Android, and Android WebView)? Yes Is this feature fully tested by
> web-platform-tests
>
> ? Yes Tests will be added to test262 before launching Link to entry on
> the Chrome Platform Status
> https://www.chromestatus.com/features/5440249461211136
>
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