- localeMatcher?: "best fit" | "lookup";\r
- weekday?: "long" | "short" | "narrow";\r
- era?: "long" | "short" | "narrow";\r
- year?: "numeric" | "2-digit";\r
- month?: "numeric" | "2-digit" | "long" | "short" | "narrow";\r
- day?: "numeric" | "2-digit";\r
- hour?: "numeric" | "2-digit";\r
- minute?: "numeric" | "2-digit";\r
- second?: "numeric" | "2-digit";\r
- timeZoneName?: "long" | "short";\r
- formatMatcher?: "best fit" | "basic";\r
- hour12?: boolean;\r
- timeZone?: string;\r
+ localeMatcher?: "best fit" | "lookup" | undefined;\r
+ weekday?: "long" | "short" | "narrow" | undefined;\r
+ era?: "long" | "short" | "narrow" | undefined;\r
+ year?: "numeric" | "2-digit" | undefined;\r
+ month?: "numeric" | "2-digit" | "long" | "short" | "narrow" | undefined;\r
+ day?: "numeric" | "2-digit" | undefined;\r
+ hour?: "numeric" | "2-digit" | undefined;\r
+ minute?: "numeric" | "2-digit" | undefined;\r
+ second?: "numeric" | "2-digit" | undefined;\r
+ timeZoneName?: "long" | "short" | undefined;\r
+ formatMatcher?: "best fit" | "basic" | undefined;\r
+ hour12?: boolean | undefined;\r
+ timeZone?: string | undefined;\r