Feedback on ICU's new "get IANA ID" API

[justingrant]

FYI, there's a new proposed ICU API to provide the current IANA canonical ID for a time zone ID. See https://unicode-org.atlassian.net/browse/ICU-22452 for API details. The CLDR data to power this new API is in unicode-org/cldr#3105.

@anba @FrankYFTang @Constellation - does this API meet your needs for surfacing the current IANA ID?

Do we also need an enumeration API of IANA IDs to support Intl.supportedValuesOf('timeZone') ?

cc @yumaoka

[justingrant]

Also cc @sffc

[anba]

Do we also need an enumeration API of IANA IDs to support Intl.supportedValuesOf('timeZone') ?

Not necessarily needed, because we can just iterate over all IDs, including Link names, and then manually compute the list of IANA canonical IDs.

[sffc]

I believe this is in reference to #806. @FrankYFTang posted the API over in that issue: #806 (comment).

I don't think this issue is actionable for 402 purposes so I will close it.