/**
 * @param strict Strict parsing disables the deprecated fallback to the native Date constructor when
 * parsing a string.
 */
declare function moment(
  inp?: moment.MomentInput,
  strict?: boolean
): moment.Moment;
/**
 * @param strict Strict parsing requires that the format and input match exactly, including delimiters.
 * Strict parsing is frequently the best parsing option. For more information about choosing strict vs
 * forgiving parsing, see the [parsing guide](https://momentjs.com/guides/#/parsing/).
 */
declare function moment(
  inp?: moment.MomentInput,
  format?: moment.MomentFormatSpecification,
  strict?: boolean
): moment.Moment;
/**
 * @param strict Strict parsing requires that the format and input match exactly, including delimiters.
 * Strict parsing is frequently the best parsing option. For more information about choosing strict vs
 * forgiving parsing, see the [parsing guide](https://momentjs.com/guides/#/parsing/).
 */
declare function moment(
  inp?: moment.MomentInput,
  format?: moment.MomentFormatSpecification,
  language?: string,
  strict?: boolean
): moment.Moment;

declare namespace moment {
  type RelativeTimeKey =
    | 's'
    | 'ss'
    | 'm'
    | 'mm'
    | 'h'
    | 'hh'
    | 'd'
    | 'dd'
    | 'w'
    | 'ww'
    | 'M'
    | 'MM'
    | 'y'
    | 'yy';
  type CalendarKey =
    | 'sameDay'
    | 'nextDay'
    | 'lastDay'
    | 'nextWeek'
    | 'lastWeek'
    | 'sameElse'
    | string;
  type LongDateFormatKey =
    | 'LTS'
    | 'LT'
    | 'L'
    | 'LL'
    | 'LLL'
    | 'LLLL'
    | 'lts'
    | 'lt'
    | 'l'
    | 'll'
    | 'lll'
    | 'llll';

  interface Locale {
    calendar(key?: CalendarKey, m?: Moment, now?: Moment): string;

    longDateFormat(key: LongDateFormatKey): string;
    invalidDate(): string;
    ordinal(n: number): string;

    preparse(inp: string): string;
    postformat(inp: string): string;
    relativeTime(
      n: number,
      withoutSuffix: boolean,
      key: RelativeTimeKey,
      isFuture: boolean
    ): string;
    pastFuture(diff: number, absRelTime: string): string;
    set(config: Object): void;

    months(): string[];
    months(m: Moment, format?: string): string;
    monthsShort(): string[];
    monthsShort(m: Moment, format?: string): string;
    monthsParse(monthName: string, format: string, strict: boolean): number;
    monthsRegex(strict: boolean): RegExp;
    monthsShortRegex(strict: boolean): RegExp;

    week(m: Moment): number;
    firstDayOfYear(): number;
    firstDayOfWeek(): number;

    weekdays(): string[];
    weekdays(m: Moment, format?: string): string;
    weekdaysMin(): string[];
    weekdaysMin(m: Moment): string;
    weekdaysShort(): string[];
    weekdaysShort(m: Moment): string;
    weekdaysParse(weekdayName: string, format: string, strict: boolean): number;
    weekdaysRegex(strict: boolean): RegExp;
    weekdaysShortRegex(strict: boolean): RegExp;
    weekdaysMinRegex(strict: boolean): RegExp;

    isPM(input: string): boolean;
    meridiem(hour: number, minute: number, isLower: boolean): string;
  }

  interface StandaloneFormatSpec {
    format: string[];
    standalone: string[];
    isFormat?: RegExp;
  }

  interface WeekSpec {
    dow: number;
    doy?: number;
  }

  type CalendarSpecVal = string | ((m?: MomentInput, now?: Moment) => string);
  interface CalendarSpec {
    sameDay?: CalendarSpecVal;
    nextDay?: CalendarSpecVal;
    lastDay?: CalendarSpecVal;
    nextWeek?: CalendarSpecVal;
    lastWeek?: CalendarSpecVal;
    sameElse?: CalendarSpecVal;

    // any additional properties might be used with moment.calendarFormat
    [x: string]: CalendarSpecVal | void; // undefined
  }

  type RelativeTimeSpecVal =
    | string
    | ((
        n: number,
        withoutSuffix: boolean,
        key: RelativeTimeKey,
        isFuture: boolean
      ) => string);
  type RelativeTimeFuturePastVal = string | ((relTime: string) => string);

  interface RelativeTimeSpec {
    future?: RelativeTimeFuturePastVal;
    past?: RelativeTimeFuturePastVal;
    s?: RelativeTimeSpecVal;
    ss?: RelativeTimeSpecVal;
    m?: RelativeTimeSpecVal;
    mm?: RelativeTimeSpecVal;
    h?: RelativeTimeSpecVal;
    hh?: RelativeTimeSpecVal;
    d?: RelativeTimeSpecVal;
    dd?: RelativeTimeSpecVal;
    w?: RelativeTimeSpecVal;
    ww?: RelativeTimeSpecVal;
    M?: RelativeTimeSpecVal;
    MM?: RelativeTimeSpecVal;
    y?: RelativeTimeSpecVal;
    yy?: RelativeTimeSpecVal;
  }

  interface LongDateFormatSpec {
    LTS: string;
    LT: string;
    L: string;
    LL: string;
    LLL: string;
    LLLL: string;

    // lets forget for a sec that any upper/lower permutation will also work
    lts?: string;
    lt?: string;
    l?: string;
    ll?: string;
    lll?: string;
    llll?: string;
  }

  type MonthWeekdayFn = (momentToFormat: Moment, format?: string) => string;
  type WeekdaySimpleFn = (momentToFormat: Moment) => string;
  interface EraSpec {
    since: string | number;
    until: string | number;
    offset: number;
    name: string;
    narrow: string;
    abbr: string;
  }

  interface LocaleSpecification {
    months?: string[] | StandaloneFormatSpec | MonthWeekdayFn;
    monthsShort?: string[] | StandaloneFormatSpec | MonthWeekdayFn;

    weekdays?: string[] | StandaloneFormatSpec | MonthWeekdayFn;
    weekdaysShort?: string[] | StandaloneFormatSpec | WeekdaySimpleFn;
    weekdaysMin?: string[] | StandaloneFormatSpec | WeekdaySimpleFn;

    meridiemParse?: RegExp;
    meridiem?: (hour: number, minute: number, isLower: boolean) => string;

    isPM?: (input: string) => boolean;

    longDateFormat?: LongDateFormatSpec;
    calendar?: CalendarSpec;
    relativeTime?: RelativeTimeSpec;
    invalidDate?: string;
    ordinal?: (n: number) => string;
    ordinalParse?: RegExp;

    week?: WeekSpec;
    eras?: EraSpec[];

    // Allow anything: in general any property that is passed as locale spec is
    // put in the locale object so it can be used by locale functions
    [x: string]: any;
  }

  interface MomentObjectOutput {
    years: number;
    /* One digit */
    months: number;
    /* Day of the month */
    date: number;
    hours: number;
    minutes: number;
    seconds: number;
    milliseconds: number;
  }

  interface argThresholdOpts {
    ss?: number;
    s?: number;
    m?: number;
    h?: number;
    d?: number;
    w?: number | void;
    M?: number;
  }

  interface Duration {
    clone(): Duration;

    humanize(argWithSuffix?: boolean, argThresholds?: argThresholdOpts): string;

    humanize(argThresholds?: argThresholdOpts): string;

    abs(): Duration;

    as(units: unitOfTime.Base): number;
    get(units: unitOfTime.Base): number;

    milliseconds(): number;
    asMilliseconds(): number;

    seconds(): number;
    asSeconds(): number;

    minutes(): number;
    asMinutes(): number;

    hours(): number;
    asHours(): number;

    days(): number;
    asDays(): number;

    weeks(): number;
    asWeeks(): number;

    months(): number;
    asMonths(): number;

    years(): number;
    asYears(): number;

    add(inp?: DurationInputArg1, unit?: DurationInputArg2): Duration;
    subtract(inp?: DurationInputArg1, unit?: DurationInputArg2): Duration;

    locale(): string;
    locale(locale: LocaleSpecifier): Duration;
    localeData(): Locale;

    toISOString(): string;
    toJSON(): string;

    isValid(): boolean;

    /**
     * @deprecated since version 2.8.0
     */
    lang(locale: LocaleSpecifier): Moment;
    /**
     * @deprecated since version 2.8.0
     */
    lang(): Locale;
    /**
     * @deprecated
     */
    toIsoString(): string;
  }

  interface MomentRelativeTime {
    future: any;
    past: any;
    s: any;
    ss: any;
    m: any;
    mm: any;
    h: any;
    hh: any;
    d: any;
    dd: any;
    M: any;
    MM: any;
    y: any;
    yy: any;
  }

  interface MomentLongDateFormat {
    L: string;
    LL: string;
    LLL: string;
    LLLL: string;
    LT: string;
    LTS: string;

    l?: string;
    ll?: string;
    lll?: string;
    llll?: string;
    lt?: string;
    lts?: string;
  }

  interface MomentParsingFlags {
    empty: boolean;
    unusedTokens: string[];
    unusedInput: string[];
    overflow: number;
    charsLeftOver: number;
    nullInput: boolean;
    invalidMonth: string | void; // null
    invalidFormat: boolean;
    userInvalidated: boolean;
    iso: boolean;
    parsedDateParts: any[];
    meridiem: string | void; // null
  }

  interface MomentParsingFlagsOpt {
    empty?: boolean;
    unusedTokens?: string[];
    unusedInput?: string[];
    overflow?: number;
    charsLeftOver?: number;
    nullInput?: boolean;
    invalidMonth?: string;
    invalidFormat?: boolean;
    userInvalidated?: boolean;
    iso?: boolean;
    parsedDateParts?: any[];
    meridiem?: string;
  }

  interface MomentBuiltinFormat {
    __momentBuiltinFormatBrand: any;
  }

  type MomentFormatSpecification =
    | string
    | MomentBuiltinFormat
    | (string | MomentBuiltinFormat)[];

  export namespace unitOfTime {
    type Base =
      | 'year'
      | 'years'
      | 'y'
      | 'month'
      | 'months'
      | 'M'
      | 'week'
      | 'weeks'
      | 'w'
      | 'day'
      | 'days'
      | 'd'
      | 'hour'
      | 'hours'
      | 'h'
      | 'minute'
      | 'minutes'
      | 'm'
      | 'second'
      | 'seconds'
      | 's'
      | 'millisecond'
      | 'milliseconds'
      | 'ms';

    type _quarter = 'quarter' | 'quarters' | 'Q';
    type _isoWeek = 'isoWeek' | 'isoWeeks' | 'W';
    type _date = 'date' | 'dates' | 'D';
    type DurationConstructor = Base | _quarter | _isoWeek;

    export type DurationAs = Base;

    export type StartOf = Base | _quarter | _isoWeek | _date | void; // null

    export type Diff = Base | _quarter;

    export type MomentConstructor = Base | _date;

    export type All =
      | Base
      | _quarter
      | _isoWeek
      | _date
      | 'weekYear'
      | 'weekYears'
      | 'gg'
      | 'isoWeekYear'
      | 'isoWeekYears'
      | 'GG'
      | 'dayOfYear'
      | 'dayOfYears'
      | 'DDD'
      | 'weekday'
      | 'weekdays'
      | 'e'
      | 'isoWeekday'
      | 'isoWeekdays'
      | 'E';
  }

  type numberlike = number | string;
  interface MomentInputObject {
    years?: numberlike;
    year?: numberlike;
    y?: numberlike;

    months?: numberlike;
    month?: numberlike;
    M?: numberlike;

    days?: numberlike;
    day?: numberlike;
    d?: numberlike;

    dates?: numberlike;
    date?: numberlike;
    D?: numberlike;

    hours?: numberlike;
    hour?: numberlike;
    h?: numberlike;

    minutes?: numberlike;
    minute?: numberlike;
    m?: numberlike;

    seconds?: numberlike;
    second?: numberlike;
    s?: numberlike;

    milliseconds?: numberlike;
    millisecond?: numberlike;
    ms?: numberlike;
  }

  interface DurationInputObject extends MomentInputObject {
    quarters?: numberlike;
    quarter?: numberlike;
    Q?: numberlike;

    weeks?: numberlike;
    week?: numberlike;
    w?: numberlike;
  }

  interface MomentSetObject extends MomentInputObject {
    weekYears?: numberlike;
    weekYear?: numberlike;
    gg?: numberlike;

    isoWeekYears?: numberlike;
    isoWeekYear?: numberlike;
    GG?: numberlike;

    quarters?: numberlike;
    quarter?: numberlike;
    Q?: numberlike;

    weeks?: numberlike;
    week?: numberlike;
    w?: numberlike;

    isoWeeks?: numberlike;
    isoWeek?: numberlike;
    W?: numberlike;

    dayOfYears?: numberlike;
    dayOfYear?: numberlike;
    DDD?: numberlike;

    weekdays?: numberlike;
    weekday?: numberlike;
    e?: numberlike;

    isoWeekdays?: numberlike;
    isoWeekday?: numberlike;
    E?: numberlike;
  }

  interface FromTo {
    from: MomentInput;
    to: MomentInput;
  }

  type MomentInput =
    | Moment
    | Date
    | string
    | number
    | (number | string)[]
    | MomentInputObject
    | void; // null | undefined
  type DurationInputArg1 =
    | Duration
    | number
    | string
    | FromTo
    | DurationInputObject
    | void; // null | undefined
  type DurationInputArg2 = unitOfTime.DurationConstructor;
  type LocaleSpecifier = string | Moment | Duration | string[] | boolean;

  interface MomentCreationData {
    input: MomentInput;
    format?: MomentFormatSpecification;
    locale: Locale;
    isUTC: boolean;
    strict?: boolean;
  }

  interface Moment extends Object {
    format(format?: string): string;

    startOf(unitOfTime: unitOfTime.StartOf): Moment;
    endOf(unitOfTime: unitOfTime.StartOf): Moment;

    add(amount?: DurationInputArg1, unit?: DurationInputArg2): Moment;
    /**
     * @deprecated reverse syntax
     */
    add(unit: unitOfTime.DurationConstructor, amount: number | string): Moment;

    subtract(amount?: DurationInputArg1, unit?: DurationInputArg2): Moment;
    /**
     * @deprecated reverse syntax
     */
    subtract(
      unit: unitOfTime.DurationConstructor,
      amount: number | string
    ): Moment;

    calendar(): string;
    calendar(formats: CalendarSpec): string;
    calendar(time: MomentInput, formats?: CalendarSpec): string;

    clone(): Moment;

    /**
     * @return Unix timestamp in milliseconds
     */
    valueOf(): number;

    // current date/time in local mode
    local(keepLocalTime?: boolean): Moment;
    isLocal(): boolean;

    // current date/time in UTC mode
    utc(keepLocalTime?: boolean): Moment;
    isUTC(): boolean;
    /**
     * @deprecated use isUTC
     */
    isUtc(): boolean;

    parseZone(): Moment;
    isValid(): boolean;
    invalidAt(): number;

    hasAlignedHourOffset(other?: MomentInput): boolean;

    creationData(): MomentCreationData;
    parsingFlags(): MomentParsingFlags;

    year(y: number): Moment;
    year(): number;
    /**
     * @deprecated use year(y)
     */
    years(y: number): Moment;
    /**
     * @deprecated use year()
     */
    years(): number;
    quarter(): number;
    quarter(q: number): Moment;
    quarters(): number;
    quarters(q: number): Moment;
    month(M: number | string): Moment;
    month(): number;
    /**
     * @deprecated use month(M)
     */
    months(M: number | string): Moment;
    /**
     * @deprecated use month()
     */
    months(): number;
    day(d: number | string): Moment;
    day(): number;
    days(d: number | string): Moment;
    days(): number;
    date(d: number): Moment;
    date(): number;
    /**
     * @deprecated use date(d)
     */
    dates(d: number): Moment;
    /**
     * @deprecated use date()
     */
    dates(): number;
    hour(h: number): Moment;
    hour(): number;
    hours(h: number): Moment;
    hours(): number;
    minute(m: number): Moment;
    minute(): number;
    minutes(m: number): Moment;
    minutes(): number;
    second(s: number): Moment;
    second(): number;
    seconds(s: number): Moment;
    seconds(): number;
    millisecond(ms: number): Moment;
    millisecond(): number;
    milliseconds(ms: number): Moment;
    milliseconds(): number;
    weekday(): number;
    weekday(d: number): Moment;
    isoWeekday(): number;
    isoWeekday(d: number | string): Moment;
    weekYear(): number;
    weekYear(d: number): Moment;
    isoWeekYear(): number;
    isoWeekYear(d: number): Moment;
    week(): number;
    week(d: number): Moment;
    weeks(): number;
    weeks(d: number): Moment;
    isoWeek(): number;
    isoWeek(d: number): Moment;
    isoWeeks(): number;
    isoWeeks(d: number): Moment;
    weeksInYear(): number;
    weeksInWeekYear(): number;
    isoWeeksInYear(): number;
    isoWeeksInISOWeekYear(): number;
    dayOfYear(): number;
    dayOfYear(d: number): Moment;

    from(inp: MomentInput, suffix?: boolean): string;
    to(inp: MomentInput, suffix?: boolean): string;
    fromNow(withoutSuffix?: boolean): string;
    toNow(withoutPrefix?: boolean): string;

    diff(
      b: MomentInput,
      unitOfTime?: unitOfTime.Diff,
      precise?: boolean
    ): number;

    toArray(): number[];
    toDate(): Date;
    toISOString(keepOffset?: boolean): string;
    inspect(): string;
    toJSON(): string;
    unix(): number;

    isLeapYear(): boolean;
    /**
     * @deprecated in favor of utcOffset
     */
    zone(): number;
    zone(b: number | string): Moment;
    utcOffset(): number;
    utcOffset(b: number | string, keepLocalTime?: boolean): Moment;
    isUtcOffset(): boolean;
    daysInMonth(): number;
    isDST(): boolean;

    zoneAbbr(): string;
    zoneName(): string;

    isBefore(inp?: MomentInput, granularity?: unitOfTime.StartOf): boolean;
    isAfter(inp?: MomentInput, granularity?: unitOfTime.StartOf): boolean;
    isSame(inp?: MomentInput, granularity?: unitOfTime.StartOf): boolean;
    isSameOrAfter(inp?: MomentInput, granularity?: unitOfTime.StartOf): boolean;
    isSameOrBefore(
      inp?: MomentInput,
      granularity?: unitOfTime.StartOf
    ): boolean;
    isBetween(
      a: MomentInput,
      b: MomentInput,
      granularity?: unitOfTime.StartOf,
      inclusivity?: '()' | '[)' | '(]' | '[]'
    ): boolean;

    /**
     * @deprecated as of 2.8.0, use locale
     */
    lang(language: LocaleSpecifier): Moment;
    /**
     * @deprecated as of 2.8.0, use locale
     */
    lang(): Locale;

    locale(): string;
    locale(locale: LocaleSpecifier): Moment;

    localeData(): Locale;

    /**
     * @deprecated no reliable implementation
     */
    isDSTShifted(): boolean;

    // NOTE(constructor): Same as moment constructor
    /**
     * @deprecated as of 2.7.0, use moment.min/max
     */
    max(
      inp?: MomentInput,
      format?: MomentFormatSpecification,
      strict?: boolean
    ): Moment;
    /**
     * @deprecated as of 2.7.0, use moment.min/max
     */
    max(
      inp?: MomentInput,
      format?: MomentFormatSpecification,
      language?: string,
      strict?: boolean
    ): Moment;

    // NOTE(constructor): Same as moment constructor
    /**
     * @deprecated as of 2.7.0, use moment.min/max
     */
    min(
      inp?: MomentInput,
      format?: MomentFormatSpecification,
      strict?: boolean
    ): Moment;
    /**
     * @deprecated as of 2.7.0, use moment.min/max
     */
    min(
      inp?: MomentInput,
      format?: MomentFormatSpecification,
      language?: string,
      strict?: boolean
    ): Moment;

    get(unit: unitOfTime.All): number;
    set(unit: unitOfTime.All, value: number): Moment;
    set(objectLiteral: MomentSetObject): Moment;

    toObject(): MomentObjectOutput;
  }

  export var version: string;
  export var fn: Moment;

  // NOTE(constructor): Same as moment constructor
  /**
   * @param strict Strict parsing disables the deprecated fallback to the native Date constructor when
   * parsing a string.
   */
  export function utc(inp?: MomentInput, strict?: boolean): Moment;
  /**
   * @param strict Strict parsing requires that the format and input match exactly, including delimiters.
   * Strict parsing is frequently the best parsing option. For more information about choosing strict vs
   * forgiving parsing, see the [parsing guide](https://momentjs.com/guides/#/parsing/).
   */
  export function utc(
    inp?: MomentInput,
    format?: MomentFormatSpecification,
    strict?: boolean
  ): Moment;
  /**
   * @param strict Strict parsing requires that the format and input match exactly, including delimiters.
   * Strict parsing is frequently the best parsing option. For more information about choosing strict vs
   * forgiving parsing, see the [parsing guide](https://momentjs.com/guides/#/parsing/).
   */
  export function utc(
    inp?: MomentInput,
    format?: MomentFormatSpecification,
    language?: string,
    strict?: boolean
  ): Moment;

  export function unix(timestamp: number): Moment;

  export function invalid(flags?: MomentParsingFlagsOpt): Moment;
  export function isMoment(m: any): m is Moment;
  export function isDate(m: any): m is Date;
  export function isDuration(d: any): d is Duration;

  /**
   * @deprecated in 2.8.0
   */
  export function lang(language?: string): string;
  /**
   * @deprecated in 2.8.0
   */
  export function lang(language?: string, definition?: Locale): string;

  export function locale(language?: string): string;
  export function locale(language?: string[]): string;
  export function locale(
    language?: string,
    definition?: LocaleSpecification | void
  ): string; // null | undefined

  export function localeData(key?: string | string[]): Locale;

  export function duration(
    inp?: DurationInputArg1,
    unit?: DurationInputArg2
  ): Duration;

  // NOTE(constructor): Same as moment constructor
  export function parseZone(
    inp?: MomentInput,
    format?: MomentFormatSpecification,
    strict?: boolean
  ): Moment;
  export function parseZone(
    inp?: MomentInput,
    format?: MomentFormatSpecification,
    language?: string,
    strict?: boolean
  ): Moment;

  export function months(): string[];
  export function months(index: number): string;
  export function months(format: string): string[];
  export function months(format: string, index: number): string;
  export function monthsShort(): string[];
  export function monthsShort(index: number): string;
  export function monthsShort(format: string): string[];
  export function monthsShort(format: string, index: number): string;

  export function weekdays(): string[];
  export function weekdays(index: number): string;
  export function weekdays(format: string): string[];
  export function weekdays(format: string, index: number): string;
  export function weekdays(localeSorted: boolean): string[];
  export function weekdays(localeSorted: boolean, index: number): string;
  export function weekdays(localeSorted: boolean, format: string): string[];
  export function weekdays(
    localeSorted: boolean,
    format: string,
    index: number
  ): string;
  export function weekdaysShort(): string[];
  export function weekdaysShort(index: number): string;
  export function weekdaysShort(format: string): string[];
  export function weekdaysShort(format: string, index: number): string;
  export function weekdaysShort(localeSorted: boolean): string[];
  export function weekdaysShort(localeSorted: boolean, index: number): string;
  export function weekdaysShort(
    localeSorted: boolean,
    format: string
  ): string[];
  export function weekdaysShort(
    localeSorted: boolean,
    format: string,
    index: number
  ): string;
  export function weekdaysMin(): string[];
  export function weekdaysMin(index: number): string;
  export function weekdaysMin(format: string): string[];
  export function weekdaysMin(format: string, index: number): string;
  export function weekdaysMin(localeSorted: boolean): string[];
  export function weekdaysMin(localeSorted: boolean, index: number): string;
  export function weekdaysMin(localeSorted: boolean, format: string): string[];
  export function weekdaysMin(
    localeSorted: boolean,
    format: string,
    index: number
  ): string;

  export function min(moments: Moment[]): Moment;
  export function min(...moments: Moment[]): Moment;
  export function max(moments: Moment[]): Moment;
  export function max(...moments: Moment[]): Moment;

  /**
   * Returns unix time in milliseconds. Overwrite for profit.
   */
  export function now(): number;

  export function defineLocale(
    language: string,
    localeSpec: LocaleSpecification | void
  ): Locale; // null
  export function updateLocale(
    language: string,
    localeSpec: LocaleSpecification | void
  ): Locale; // null

  export function locales(): string[];

  export function normalizeUnits(unit: unitOfTime.All): string;
  export function relativeTimeThreshold(threshold: string): number | boolean;
  export function relativeTimeThreshold(
    threshold: string,
    limit: number
  ): boolean;
  export function relativeTimeRounding(fn: (num: number) => number): boolean;
  export function relativeTimeRounding(): (num: number) => number;
  export function calendarFormat(m: Moment, now: Moment): string;

  export function parseTwoDigitYear(input: string): number;

  /**
   * Constant used to enable explicit ISO_8601 format parsing.
   */
  export var ISO_8601: MomentBuiltinFormat;
  export var RFC_2822: MomentBuiltinFormat;

  export var defaultFormat: string;
  export var defaultFormatUtc: string;
  export var suppressDeprecationWarnings: boolean;
  export var deprecationHandler:
    | ((name: string | void, msg: string) => void)
    | void;

  export var HTML5_FMT: {
    DATETIME_LOCAL: string;
    DATETIME_LOCAL_SECONDS: string;
    DATETIME_LOCAL_MS: string;
    DATE: string;
    TIME: string;
    TIME_SECONDS: string;
    TIME_MS: string;
    WEEK: string;
    MONTH: string;
  };
}

export = moment;
