interface Intl.DateTimeFormatOptions
unstable
Properties Jump to heading
optional
Jump to headingdayPeriod: "narrow"
| "short"
| "long"optional
Jump to headingdateStyle: "full"
| "long"
| "medium"
| "short"optional
Jump to headingtimeStyle: "full"
| "long"
| "medium"
| "short"