[Webkit-unassigned] [Bug 238437] New: Intl.NumberFormat.formatRange(), Intl.NumberFormat.formatRangeToParts(), and Intl.PluralRules.selectRange() are not available

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=238437

            Bug ID: 238437
           Summary: Intl.NumberFormat.formatRange(),
                    Intl.NumberFormat.formatRangeToParts(), and
                    Intl.PluralRules.selectRange() are not available
           Product: WebKit
           Version: Safari 15
          Hardware: Mac (Intel)
                OS: macOS 10.15
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: alanodaval at hotmail.com

The release notes for Safari 15.4 mention that Intl.NumberFormat.formatRange(), Intl.NumberFormat.formatRangeToParts(), and Intl.PluralRules.selectRange() have all been added.

https://developer.apple.com/documentation/safari-release-notes/safari-15_4-release-notes

However, doing some simple tests, all of the functions above are undefined

new Intl.NumberFormat('de-DE').formatRange; // undefined
new Intl.NumberFormat('de-DE').formatRangeToParts; // undefined

new Intl.PluralRules('de-DE').selectRange; // undefined

I've tested the other Intl features added in 15.4 but every other feature except these three seem to be implemented correctly

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