export interface DateAddingObject {
    year?: number;
    month?: number;
    day?: number;
    hour?: number;
    minute?: number;
    second?: number;
    millisecond?: number;
    years?: number;
    months?: number;
    days?: number;
    hours?: number;
    minutes?: number;
    seconds?: number;
    milliseconds?: number;
    Y?: number;
    y?: number;
    M?: number;
    d?: number;
    h?: number;
    m?: number;
    s?: number;
    ms?: number;
}
export interface InnerDateParsingObject {
    year?: number;
    month?: number;
    date?: number;
    hour?: number;
    minute?: number;
    second?: number;
    millisecond?: number;
    utcOffset?: number;
}
export interface DateParsingObject extends DateAddingObject {
    utcOffset?: number;
}
/**
 * Date input type
 * 日期输入类型
 */
export type DateInput = string | number | Date | number[] | DateParsingObject;
/**
 * Internal date unit
 * 内部日期单位
 */
export type InnerUnit = 'year' | 'month' | 'date' | 'day' | 'hour' | 'minute' | 'second' | 'millisecond';
export interface InnerUnits {
    /**
     * Time unit (时间单位)
     */
    TIME: 'time';
    /**
     * Year unit (年单位)
     */
    YEAR: 'year';
    /**
     * Month unit (月单位)
     */
    MONTH: 'month';
    /**
     * Date unit (日单位)
     */
    DATE: 'date';
    /**
     * Day unit (日单位)
     */
    DAY: 'day';
    /**
     * Hour unit (时单位)
     */
    HOUR: 'hour';
    /**
     * Minute unit (分单位)
     */
    MINUTE: 'minute';
    /**
     * Second unit (秒单位)
     */
    SECOND: 'second';
    /**
     * Millisecond unit (毫秒单位)
     */
    MILLISECOND: 'millisecond';
    /**
     * UTC offset unit (时区单位)
     */
    UTC_OFFSET: 'utcOffset';
}
/**
 * Date unit
 * 日期单位
 */
export type Unit = 'Y' | 'y' | 'M' | 'D' | 'd' | 'h' | 'm' | 's' | 'ms' | InnerUnit | 'years' | 'months' | 'dates' | 'days' | 'hours' | 'minutes' | 'seconds' | 'milliseconds';
export type ChainInput = DateInput | IDateChain;
export interface IDateChain {
    add(input: DateAddingObject): this;
    add(num: number, unit: Unit): this;
    addDays(days: number): this;
    addHours(hours: number): this;
    addMilliseconds(ms: number): this;
    addMinutes(minutes: number): this;
    addMonths(months: number): this;
    addYears(years: number): this;
    dayOfYear(): number;
    dayOfYear(val: number): this;
    daysInMonth(): number;
    diff(input: ChainInput, unit: Unit, asFloat?: boolean): number;
    diffInDays(input: ChainInput, asFloat?: boolean): number;
    diffInHours(input: ChainInput, asFloat?: boolean): number;
    diffInMilliseconds(input: ChainInput, asFloat?: boolean): number;
    diffInMinutes(input: ChainInput, asFloat?: boolean): number;
    diffInMonths(input: ChainInput, asFloat?: boolean): number;
    diffInSeconds(input: ChainInput, asFloat?: boolean): number;
    diffInYears(input: ChainInput, asFloat?: boolean): number;
    endOf(unit: Unit): this;
    format(formatString?: string): string;
    get(unit: Unit): number;
    isAfter(input: ChainInput, unit: Unit): boolean;
    isBefore(input: ChainInput, unit: Unit): boolean;
    isBetween(from: ChainInput, to: ChainInput, unit: Unit, inclusivity?: string): boolean;
    isLeapYear(): boolean;
    isSame(input: ChainInput, unit: Unit): boolean;
    isSameOrAfter(input: ChainInput, unit: Unit): boolean;
    isSameOrBefore(input: ChainInput, unit: Unit): boolean;
    isValid(): boolean;
    set(unit: Unit, val: number): this;
    startOf(unit: Unit): this;
    subDays(days: number): this;
    subHours(hours: number): this;
    subMilliseconds(time: number): this;
    subMinutes(minutes: number): this;
    subMonths(months: number): this;
    subSeconds(seconds: number): this;
    subtract(input: number | DateAddingObject): this;
    subtract(num: number, unit: Unit): this;
    subYears(years: number): this;
    year(year: number): this;
    year(): number;
    month(month: number): this;
    month(): number;
    date(date: number): this;
    date(): number;
    day(day: number): this;
    day(): number;
    hour(hour: number): this;
    hour(): number;
    minute(minute: number): this;
    minute(): number;
    second(second: number): this;
    second(): number;
    millisecond(millisecond: number): this;
    millisecond(): number;
    time(time: number): this;
    time(): number;
    hours(hours: number): this;
    hours(): number;
    minutes(minutes: number): this;
    minutes(): number;
    seconds(seconds: number): this;
    seconds(): number;
    milliseconds(milliseconds: number): this;
    milliseconds(): number;
    clone(): IDateChain;
    toArray(): number[];
    toDate(): Date;
    toISOString(): string;
    toJSON(): string;
    toString(): string;
    valueOf(): number;
}