@types/luxon/src/misc.d.ts

export type DateTimeFormatOptions = Intl.DateTimeFormatOptions;

export interface ZoneOptions {
    /**
     * If true, adjust the underlying time so that the local time stays the same, but in the target zone.
     * You should rarely need this.
     * Defaults to false.
     */
    keepLocalTime?: boolean;
    /**
     * @deprecated since 0.2.12. Use keepLocalTime instead
     */
    keepCalendarTime?: boolean;
}

/** @deprecated */
export type EraLength = StringUnitLength;

export type NumberingSystem = Intl.DateTimeFormatOptions extends { numberingSystem?: infer T } ? T :
    | 'arab'
    | 'arabext'
    | 'bali'
    | 'beng'
    | 'deva'
    | 'fullwide'
    | 'gujr'
    | 'guru'
    | 'hanidec'
    | 'khmr'
    | 'knda'
    | 'laoo'
    | 'latn'
    | 'limb'
    | 'mlym'
    | 'mong'
    | 'mymr'
    | 'orya'
    | 'tamldec'
    | 'telu'
    | 'thai'
    | 'tibt';

export type CalendarSystem = Intl.DateTimeFormatOptions extends { calendar?: infer T } ? T :
    | 'buddhist'
    | 'chinese'
    | 'coptic'
    | 'ethioaa'
    | 'ethiopic'
    | 'gregory'
    | 'hebrew'
    | 'indian'
    | 'islamic'
    | 'islamicc'
    | 'iso8601'
    | 'japanese'
    | 'persian'
    | 'roc';

export type HourCycle = 'h11' | 'h12' | 'h23' | 'h24';

export type StringUnitLength = 'narrow' | 'short' | 'long';
export type NumberUnitLength = 'numeric' | '2-digit';
export type UnitLength = StringUnitLength | NumberUnitLength;