import type { DurationInput, DurationUnit } from './duration';
export type DateTimeInput = InputObject | Date | string | number | Array<string | number> | DateTime | null | undefined;
export type FormatInput = string | undefined;
export type BaseUnit = 'year' | 'years' | 'y' | 'month' | 'months' | 'M' | 'day' | 'days' | 'd' | 'hour' | 'hours' | 'h' | 'minute' | 'minutes' | 'm' | 'second' | 'seconds' | 's' | 'millisecond' | 'milliseconds' | 'ms';
export type QuarterUnit = 'quarter' | 'quarters' | 'Q';
export type WeekUnit = 'week' | 'weeks' | 'w';
type IsoWeekUnit = 'isoWeek' | 'isoWeeks';
type DateUnit = 'date' | 'dates' | 'D';
export type StartOfUnit = BaseUnit | QuarterUnit | WeekUnit | IsoWeekUnit | DateUnit;
export type AllUnit = BaseUnit | QuarterUnit | DateUnit | WeekUnit | IsoWeekUnit | 'weekday' | 'weekdays' | 'e' | 'isoWeekday' | 'isoWeekdays' | 'E' | 'dayOfYear' | 'dayOfYears' | 'DDD' | 'weekYear' | 'isoWeekYear';
export type InputObject = Partial<Record<BaseUnit | DateUnit | WeekUnit | 'weekday' | 'weekdays' | 'e' | 'dayOfYear' | 'dayOfYears' | 'DDD' | 'weekYear', number>>;
export type SetObject = Partial<Record<AllUnit, number | string>>;
export interface DateTime {
    add(amount: DurationInput, unit?: DurationUnit): DateTime;
    subtract(amount: DurationInput, unit?: DurationUnit): DateTime;
    set(unit: AllUnit, amount: number): DateTime;
    set(amount: SetObject): DateTime;
    diff(amount: DateTimeInput, unit?: DurationUnit, asFloat?: boolean): number;
    format(formatInput?: FormatInput): string;
    fromNow(withoutSuffix?: boolean): string;
    from(formaInput: DateTimeInput, withoutSuffix?: boolean): string;
    isSame(input?: DateTimeInput, granularity?: StartOfUnit): boolean;
    isBefore(input?: DateTimeInput): boolean;
    isAfter(input?: DateTimeInput): boolean;
    isValid(): boolean;
    local(keepLocalTime?: boolean): DateTime;
    locale(): string;
    locale(locale: string): DateTime;
    startOf(unitOfTime: StartOfUnit): DateTime;
    endOf(unitOfTime: StartOfUnit): DateTime;
    toDate(): Date;
    toISOString(keepOffset?: boolean): string;
    toJSON(): string | null;
    valueOf(): number;
    unix(): number;
    utc(keepLocalTime?: boolean): DateTime;
    utcOffset(): number;
    utcOffset(offset: number | string, keepLocalTime?: boolean): DateTime;
    timeZone(): string;
    timeZone(timeZone: string, keepLocalTime?: boolean): DateTime;
    /** Get the number of days in the current month. */
    daysInMonth: () => number;
    /** Gets the day of the week, with Sunday as 0 and Saturday as 6. */
    day(): number;
    /** Sets the day of the week, with Sunday as 0 and Saturday as 6. */
    day(value: number): DateTime;
    /** Gets the ISO day of the week with 1 being Monday and 7 being Sunday. */
    isoWeekday(): number;
    /** Sets the ISO day of the week with 1 being Monday and 7 being Sunday. */
    isoWeekday(value: number): DateTime;
    /** Gets the day of the week according to the locale. 0 being first day of the week and 6 being last. */
    weekday(): number;
    /** Sets the day of the week according to the locale. 0 being first day of the week and 6 being last. */
    weekday(value: number): number;
    /** Gets the week of the year according to the locale. */
    week(): number;
    /** Sets the week of the year according to the locale. */
    week(value: number): DateTime;
    /** Gets the week-year according to the locale. */
    weekYear(): number;
    /** Sets the week-year according to the locale. */
    weekYear(value: number): DateTime;
    /** Gets the number of weeks in the year according to locale */
    weeksInYear(): number;
    /** Gets the ISO week of the year. First week is the week with the first Thursday of the year (i.e. of January) in it.*/
    isoWeek(): number;
    /** Sets the ISO week of the year. */
    isoWeek(value: number): DateTime;
    /** Gets the ISO week-year. */
    isoWeekYear(): number;
    /** Sets the ISO week-year. */
    isoWeekYear(value: number): DateTime;
    /** Gets the number of weeks in the year, according to ISO weeks. */
    isoWeeksInYear(): number;
    /** Gets the day of the year. */
    dayOfYear(): number;
    /** Sets the day of the year. */
    dayOfYear(value: number): DateTime;
    month(): number;
    month(value: number): DateTime;
    quarter(): number;
    quarter(value: number): DateTime;
    year(): number;
    year(value: number): DateTime;
    date(): number;
    date(value: number): DateTime;
    hour(): number;
    hour(value: number): DateTime;
    minute(): number;
    minute(value: number): DateTime;
    second(): number;
    second(value: number): DateTime;
    millisecond(): number;
    millisecond(value: number): DateTime;
}
export {};