Method supportedLocalesOf

packages/intl-pluralrules/index.ts:253–262

(
    locales?: string | string[],
    options?: Pick<Intl.PluralRulesOptions, 'localeMatcher'>
  )

    return '[object Intl.PluralRules]'
  }
  public static supportedLocalesOf(
    locales?: string | string[],
    options?: Pick<Intl.PluralRulesOptions, 'localeMatcher'>
  ): string[] {
    return SupportedLocales(
      PluralRules.availableLocales,
      CanonicalizeLocaleList(locales),
      options
    )
  }
  public static __addLocaleData(...data: PluralRulesLocaleData[]): void {
    for (const {data: d, locale} of data) {
      PluralRules.localeData[locale] = d