chore: import upstream snapshot with attribution

2026-07-13 13:32:57 +08:00
commit cd420f9332
4811 changed files with 884702 additions and 0 deletions
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+declare namespace Intl {
+  type Key = "calendar" | "collation" | "currency" | "numberingSystem" | "timeZone" | "unit";
+
+  function supportedValuesOf(input: Key): string[];
+}