Интерфейс LocaleSpecification

interface LocaleSpecification {
    calendar?: CalendarSpec;
    invalidDate?: string;
    isPM?: (input: string) => boolean;
    longDateFormat?: LongDateFormatSpec;
    meridiem?: (hour: number, minute: number, isLower: boolean) => string;
    meridiemParse?: RegExp;
    months?: string[] | StandaloneFormatSpec | MonthWeekdayFn;
    monthsShort?: string[] | StandaloneFormatSpec | MonthWeekdayFn;
    ordinal?: (n: number) => string;
    ordinalParse?: RegExp;
    relativeTime?: RelativeTimeSpec;
    week?: WeekSpec;
    weekdays?: string[] | StandaloneFormatSpec | MonthWeekdayFn;
    weekdaysMin?: string[] | StandaloneFormatSpec | WeekdaySimpleFn;
    weekdaysShort?: string[] | StandaloneFormatSpec | WeekdaySimpleFn;
    [x: string]: any;
}