Sorry, I forgot to remove "Note that since this is a V8/JS feature, this
post is just an FYI to blink-dev — no signoff from Blink API owners is
required." when I copy and paste from my old I2S email. It should be

"

Requesting approval to ship?

Yes.

"

On Thu, Oct 3, 2019 at 1:06 PM Chris Harrelson <chris...@chromium.org>
wrote:

> Also, v8 intents do in fact go through the Blink API owners process.
> Please don't ship until there are 3 LGTMs.
>
> LGTM1
>
> On Thu, Oct 3, 2019 at 12:40 PM Frank Tang <ft...@chromium.org> wrote:
>
>> To clarify these 3 PRs are considered by both ECMA402 subcommittee and
>> TC39 as "Stage 3"
>>
>> I forgot to include the previous "Intend to Implement" link. Here it is.
>>
>>
>> https://groups.google.com/a/chromium.org/forum/?fromgroups#!searchin/blink-dev/numberingSystem%7Csort:date/blink-dev/HFOWIjSBKWQ/XZnslmWsAQAJ
>>
>> These three PRs was once only 1 PR and later got split into 3 PRs. so the
>> original I2I cover all of them.
>>
>>
>> On Wed, Oct 2, 2019 at 1:11 PM Frank Tang <ft...@chromium.org> wrote:
>>
>>> These three ECMA402 PRs are intertwined and need to be considered to
>>> ship together instead of three different one:
>>>
>>> #175 Add calendar and numberingSystem options
>>> #349 Allow calendar to determine choice of pattern
>>> #351 Permit relatedYear and yearName in output
>>>
>>>
>>> Spec
>>>
>>> https://github.com/tc39/ecma402/pull/175
>>>
>>> https://github.com/tc39/ecma402/pull/349
>>>
>>> https://github.com/tc39/ecma402/pull/351
>>>
>>> Summary
>>>
>>>
>>> All three ECMA402 PRs reach consensus from both ECMA402 committee late
>>> Sept and TC39 in Oct. These three PRs make the pre-existing
>>> Intl.DateTimeFormat to specify different "calendar" via option (instead of
>>> appending the calendar as "-u-ca-$calendar"  in locale) and make the
>>> Intl.DateTimeFormat choose the pattern accordingly. It also change the
>>> formatToParts method to output "relatedYear" or "yearName" type for some
>>> non-gregorian calendar (such as Chinese calendar) while both the Chinese
>>> calendar year name and the gregorian year name are displayed based on the
>>> pattern.
>>>
>>> It also let Intl.DateTimeFormat and Intl.NumberFormat take
>>> numberingSystem from options (instead of appending "-u-nu-$numberingSystem"
>>> in locale).
>>> Example
>>>
>>> let o = new Intl.DateTimeFormat("en" , {
>>>   calendar: "chinese", year: "numeric"
>>> });console.log(o.format(Date.now())); // 
>>> "2019(ji-hai)"console.log(o.formatToParts(Date.now()));
>>> // [{type: "relatedYear", value: "2019"},
>>> //  {type: "literal", value: "("},
>>> //  {type: "yearName", value: "ji-hai"},
>>> //  {type: "literal", value: ")"}]
>>>
>>> let n = new Intl.NumberFormat("en" , {
>>>   numberingSystem: "thai"
>>> });console.log(n.format(1234567890)); // "๑๒๓,๔๕๖,๗๘๙"
>>>
>>>
>>>
>>> Interoperability and compatibility risk
>>>
>>> The options "numberingSystem" added to Intl.DateTimeFormat and
>>> Intl.NumberFormat is already supported by Intl.Locale and
>>> Intl.RelativeTimeFormat with the same meaning. The options "calendar" added
>>> to Intl.DateTimeFormat is already supported by Intl.Locale with the same
>>> meaning. The risk to break pre-existing javascript code is low.
>>>
>>>    -
>>>
>>>    Firefox: No public signals
>>>    -
>>>
>>>    Edge: No public signals
>>>    -
>>>
>>>    Safari:No public signals
>>>    -
>>>
>>>    Web Developers:No signals
>>>
>>>
>>> Is this feature fully tested?
>>>
>>> Yes; our implementation passes our own V8 tests for all the features.
>>>
>>> test/intl/number-format/check-numbering-system.js
>>> test/intl/number-format/constructor-numberingSytem-order.js
>>> test/intl/date-format/check-numbering-system.js
>>> test/intl/date-format/check-calendar.js
>>> test/intl/date-format/constructor-calendar-numberingSytem-order.js
>>> test/intl/date-format/related-year.js
>>> test/intl/regress-9786.js
>>> test/intl/regress-9787.js
>>> test/intl/regress-9788.js
>>> test/intl/regress-966285.js
>>>
>>> Also test262 tests (more to come this week #2379
>>> <https://github.com/tc39/test262/pull/2379> #2381
>>> <https://github.com/tc39/test262/pull/2381> #2383
>>> <https://github.com/tc39/test262/pull/2383>)
>>> intl402/NumberFormat/numbering-system-options
>>> intl402/DateTimeFormat/numbering-system-calendar-options
>>>
>>>
>>> Tracking bug
>>>
>>> https://crbug.com/v8/9154
>>>
>>> https://crbug.com/v8/9155
>>>
>>>
>>>
>>> Link to entry on the Chrome Platform Status dashboard
>>>
>>> https://www.chromestatus.com/features/5440249461211136
>>>
>>>
>>>
>>>
>>> Requesting approval to ship?
>>>
>>> Yes. Note that since this is a V8/JS feature, this post is just an FYI
>>> to blink-dev — no signoff from Blink API owners is required.
>>>
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>>
>

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