add Intl.supportedValuesOf

src/lib/es2022.intl.d.ts

@@ -88,4 +88,17 @@ declare namespace Intl {
          */
         supportedLocalesOf(locales: BCP47LanguageTag | BCP47LanguageTag[], options?: Pick<SegmenterOptions, "localeMatcher">): BCP47LanguageTag[];
     };
+
+    type EnumerationKeys = "calendar" | "collation" | "currency" | "numberingSystem" | "timeZone" | "unit";
+
+    /**
+     * Returns a list of the supported collation, calendar, currency, numbering system, timezones, and units by the implementation.
+     *
+     * @param key A string indicating the category of values to return.
+     *
+     * @returns {string[]} A list of the supported values.
+     *
+     * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/supportedValuesOf)
+     */
+    function supportedValuesOf(key: EnumerationKeys): string[];
 }

tests/baselines/reference/es2022IntlAPIs.js

@@ -7,6 +7,11 @@ for (const zoneName of timezoneNames) {
     timeZoneName: zoneName,
   });
 }
+
+const enumerationKeys = ['calendar', 'collation', 'currency', 'numberingSystem', 'timeZone', 'unit'] as const;
+for (const key of enumerationKeys) {
+  var supported = Intl.supportedValuesOf(key);
+}
 
 
 //// [es2022IntlAPIs.js]
@@ -18,3 +23,7 @@ for (const zoneName of timezoneNames) {
         timeZoneName: zoneName,
     });
 }
+const enumerationKeys = ['calendar', 'collation', 'currency', 'numberingSystem', 'timeZone', 'unit'];
+for (const key of enumerationKeys) {
+    var supported = Intl.supportedValuesOf(key);
+}

tests/baselines/reference/es2022IntlAPIs.symbols

@@ -24,3 +24,19 @@ for (const zoneName of timezoneNames) {
   });
 }
 
+const enumerationKeys = ['calendar', 'collation', 'currency', 'numberingSystem', 'timeZone', 'unit'] as const;
+>enumerationKeys : Symbol(enumerationKeys, Decl(es2022IntlAPIs.ts, 9, 5))
+>const : Symbol(const)
+
+for (const key of enumerationKeys) {
+>key : Symbol(key, Decl(es2022IntlAPIs.ts, 10, 10))
+>enumerationKeys : Symbol(enumerationKeys, Decl(es2022IntlAPIs.ts, 9, 5))
+
+  var supported = Intl.supportedValuesOf(key);
+>supported : Symbol(supported, Decl(es2022IntlAPIs.ts, 11, 5))
+>Intl.supportedValuesOf : Symbol(Intl.supportedValuesOf, Decl(lib.es2022.intl.d.ts, --, --))
+>Intl : Symbol(Intl, Decl(lib.es5.d.ts, --, --), Decl(lib.es2017.intl.d.ts, --, --), Decl(lib.es2018.intl.d.ts, --, --), Decl(lib.es2019.intl.d.ts, --, --), Decl(lib.es2020.bigint.d.ts, --, --) ... and 3 more)
+>supportedValuesOf : Symbol(Intl.supportedValuesOf, Decl(lib.es2022.intl.d.ts, --, --))
+>key : Symbol(key, Decl(es2022IntlAPIs.ts, 10, 10))
+}
+

tests/baselines/reference/es2022IntlAPIs.types

@@ -35,3 +35,27 @@ for (const zoneName of timezoneNames) {
   });
 }
 
+const enumerationKeys = ['calendar', 'collation', 'currency', 'numberingSystem', 'timeZone', 'unit'] as const;
+>enumerationKeys : readonly ["calendar", "collation", "currency", "numberingSystem", "timeZone", "unit"]
+>['calendar', 'collation', 'currency', 'numberingSystem', 'timeZone', 'unit'] as const : readonly ["calendar", "collation", "currency", "numberingSystem", "timeZone", "unit"]
+>['calendar', 'collation', 'currency', 'numberingSystem', 'timeZone', 'unit'] : readonly ["calendar", "collation", "currency", "numberingSystem", "timeZone", "unit"]
+>'calendar' : "calendar"
+>'collation' : "collation"
+>'currency' : "currency"
+>'numberingSystem' : "numberingSystem"
+>'timeZone' : "timeZone"
+>'unit' : "unit"
+
+for (const key of enumerationKeys) {
+>key : "calendar" | "collation" | "currency" | "numberingSystem" | "timeZone" | "unit"
+>enumerationKeys : readonly ["calendar", "collation", "currency", "numberingSystem", "timeZone", "unit"]
+
+  var supported = Intl.supportedValuesOf(key);
+>supported : string[]
+>Intl.supportedValuesOf(key) : string[]
+>Intl.supportedValuesOf : (key: Intl.EnumerationKeys) => string[]
+>Intl : typeof Intl
+>supportedValuesOf : (key: Intl.EnumerationKeys) => string[]
+>key : "calendar" | "collation" | "currency" | "numberingSystem" | "timeZone" | "unit"
+}
+

tests/cases/conformance/es2022/es2022IntlAPIs.ts

@@ -8,3 +8,8 @@ for (const zoneName of timezoneNames) {
     timeZoneName: zoneName,
   });
 }
+
+const enumerationKeys = ['calendar', 'collation', 'currency', 'numberingSystem', 'timeZone', 'unit'] as const;
+for (const key of enumerationKeys) {
+  var supported = Intl.supportedValuesOf(key);
+}