const korean = new Intl.Locale('ko', {
script: 'Kore',
region: 'KR',
hourCycle: 'h23',
calendar: 'gregory',
});
const japanese = new Intl.Locale('ja-Jpan-JP-u-ca-japanese-hc-h12');
console.log(korean.baseName, japanese.baseName);
// Expected output: "ko-Kore-KR" "ja-Jpan-JP"
console.log(korean.hourCycle, japanese.hourCycle);
// Expected output: "h23" "h12"