//// [es2021LocalesObjectArgument.ts]
const enUS = new Intl.Locale("en-US");
const deDE = new Intl.Locale("de-DE");
const jaJP = new Intl.Locale("ja-JP");
new Intl.ListFormat(enUS);
new Intl.ListFormat([
    deDE,
    jaJP
]);
Intl.ListFormat.supportedLocalesOf(enUS);
Intl.ListFormat.supportedLocalesOf([
    deDE,
    jaJP
]);
