vrid/lib/formatRelative.js

window.formatRelative = (() => {

'use strict';

var MILLISECONDS_IN_HOUR = 3600000;
var MILLISECONDS_IN_MINUTE = 60000;
var DEFAULT_ADDITIONAL_DIGITS = 2;

var patterns = {
  dateTimeDelimeter: /[T ]/,
  plainTime: /:/,

  // year tokens
  YY: /^(\d{2})$/,
  YYY: [
    /^([+-]\d{2})$/, // 0 additional digits
    /^([+-]\d{3})$/, // 1 additional digit
    /^([+-]\d{4})$/ // 2 additional digits
  ],
  YYYY: /^(\d{4})/,
  YYYYY: [
    /^([+-]\d{4})/, // 0 additional digits
    /^([+-]\d{5})/, // 1 additional digit
    /^([+-]\d{6})/ // 2 additional digits
  ],

  // date tokens
  MM: /^-(\d{2})$/,
  DDD: /^-?(\d{3})$/,
  MMDD: /^-?(\d{2})-?(\d{2})$/,
  Www: /^-?W(\d{2})$/,
  WwwD: /^-?W(\d{2})-?(\d{1})$/,

  HH: /^(\d{2}([.,]\d*)?)$/,
  HHMM: /^(\d{2}):?(\d{2}([.,]\d*)?)$/,
  HHMMSS: /^(\d{2}):?(\d{2}):?(\d{2}([.,]\d*)?)$/,

  // timezone tokens
  timezone: /([Z+-].*)$/,
  timezoneZ: /^(Z)$/,
  timezoneHH: /^([+-])(\d{2})$/,
  timezoneHHMM: /^([+-])(\d{2}):?(\d{2})$/
};

/**
 * @name toDate
 * @category Common Helpers
 * @summary Convert the given argument to an instance of Date.
 *
 * @description
 * Convert the given argument to an instance of Date.
 *
 * If the argument is an instance of Date, the function returns its clone.
 *
 * If the argument is a number, it is treated as a timestamp.
 *
 * If an argument is a string, the function tries to parse it.
 * Function accepts complete ISO 8601 formats as well as partial implementations.
 * ISO 8601: http://en.wikipedia.org/wiki/ISO_8601
 *
 * If the argument is null, it is treated as an invalid date.
 *
 * If all above fails, the function passes the given argument to Date constructor.
 *
 * **Note**: *all* Date arguments passed to any *date-fns* function is processed by `toDate`.
 * All *date-fns* functions will throw `RangeError` if `options.additionalDigits` is not 0, 1, 2 or undefined.
 *
 * @param {*} argument - the value to convert
 * @param {Options} [options] - the object with options. See [Options]{@link https://date-fns.org/docs/Options}
 * @param {0|1|2} [options.additionalDigits=2] - the additional number of digits in the extended year format
 * @returns {Date} the parsed date in the local time zone
 * @throws {TypeError} 1 argument required
 * @throws {RangeError} `options.additionalDigits` must be 0, 1 or 2
 *
 * @example
 * // Convert string '2014-02-11T11:30:30' to date:
 * var result = toDate('2014-02-11T11:30:30')
 * //=> Tue Feb 11 2014 11:30:30
 *
 * @example
 * // Convert string '+02014101' to date,
 * // if the additional number of digits in the extended year format is 1:
 * var result = toDate('+02014101', {additionalDigits: 1})
 * //=> Fri Apr 11 2014 00:00:00
 */
function toDate (argument, dirtyOptions) {
  if (arguments.length < 1) {
    throw new TypeError('1 argument required, but only ' + arguments.length + ' present')
  }

  if (argument === null) {
    return new Date(NaN)
  }

  var options = dirtyOptions || {};

  var additionalDigits = options.additionalDigits === undefined ? DEFAULT_ADDITIONAL_DIGITS : Number(options.additionalDigits);
  if (additionalDigits !== 2 && additionalDigits !== 1 && additionalDigits !== 0) {
    throw new RangeError('additionalDigits must be 0, 1 or 2')
  }

  // Clone the date
  if (argument instanceof Date) {
    // Prevent the date to lose the milliseconds when passed to new Date() in IE10
    return new Date(argument.getTime())
  } else if (typeof argument !== 'string') {
    return new Date(argument)
  }

  var dateStrings = splitDateString(argument);

  var parseYearResult = parseYear(dateStrings.date, additionalDigits);
  var year = parseYearResult.year;
  var restDateString = parseYearResult.restDateString;

  var date = parseDate(restDateString, year);

  if (date) {
    var timestamp = date.getTime();
    var time = 0;
    var offset;

    if (dateStrings.time) {
      time = parseTime(dateStrings.time);
    }

    if (dateStrings.timezone) {
      offset = parseTimezone(dateStrings.timezone);
    } else {
      // get offset accurate to hour in timezones that change offset
      offset = new Date(timestamp + time).getTimezoneOffset();
      offset = new Date(timestamp + time + offset * MILLISECONDS_IN_MINUTE).getTimezoneOffset();
    }

    return new Date(timestamp + time + offset * MILLISECONDS_IN_MINUTE)
  } else {
    return new Date(argument)
  }
}

function splitDateString (dateString) {
  var dateStrings = {};
  var array = dateString.split(patterns.dateTimeDelimeter);
  var timeString;

  if (patterns.plainTime.test(array[0])) {
    dateStrings.date = null;
    timeString = array[0];
  } else {
    dateStrings.date = array[0];
    timeString = array[1];
  }

  if (timeString) {
    var token = patterns.timezone.exec(timeString);
    if (token) {
      dateStrings.time = timeString.replace(token[1], '');
      dateStrings.timezone = token[1];
    } else {
      dateStrings.time = timeString;
    }
  }

  return dateStrings
}

function parseYear (dateString, additionalDigits) {
  var patternYYY = patterns.YYY[additionalDigits];
  var patternYYYYY = patterns.YYYYY[additionalDigits];

  var token;

  // YYYY or ±YYYYY
  token = patterns.YYYY.exec(dateString) || patternYYYYY.exec(dateString);
  if (token) {
    var yearString = token[1];
    return {
      year: parseInt(yearString, 10),
      restDateString: dateString.slice(yearString.length)
    }
  }

  // YY or ±YYY
  token = patterns.YY.exec(dateString) || patternYYY.exec(dateString);
  if (token) {
    var centuryString = token[1];
    return {
      year: parseInt(centuryString, 10) * 100,
      restDateString: dateString.slice(centuryString.length)
    }
  }

  // Invalid ISO-formatted year
  return {
    year: null
  }
}

function parseDate (dateString, year) {
  // Invalid ISO-formatted year
  if (year === null) {
    return null
  }

  var token;
  var date;
  var month;
  var week;

  // YYYY
  if (dateString.length === 0) {
    date = new Date(0);
    date.setUTCFullYear(year);
    return date
  }

  // YYYY-MM
  token = patterns.MM.exec(dateString);
  if (token) {
    date = new Date(0);
    month = parseInt(token[1], 10) - 1;
    date.setUTCFullYear(year, month);
    return date
  }

  // YYYY-DDD or YYYYDDD
  token = patterns.DDD.exec(dateString);
  if (token) {
    date = new Date(0);
    var dayOfYear = parseInt(token[1], 10);
    date.setUTCFullYear(year, 0, dayOfYear);
    return date
  }

  // YYYY-MM-DD or YYYYMMDD
  token = patterns.MMDD.exec(dateString);
  if (token) {
    date = new Date(0);
    month = parseInt(token[1], 10) - 1;
    var day = parseInt(token[2], 10);
    date.setUTCFullYear(year, month, day);
    return date
  }

  // YYYY-Www or YYYYWww
  token = patterns.Www.exec(dateString);
  if (token) {
    week = parseInt(token[1], 10) - 1;
    return dayOfISOYear(year, week)
  }

  // YYYY-Www-D or YYYYWwwD
  token = patterns.WwwD.exec(dateString);
  if (token) {
    week = parseInt(token[1], 10) - 1;
    var dayOfWeek = parseInt(token[2], 10) - 1;
    return dayOfISOYear(year, week, dayOfWeek)
  }

  // Invalid ISO-formatted date
  return null
}

function parseTime (timeString) {
  var token;
  var hours;
  var minutes;

  // hh
  token = patterns.HH.exec(timeString);
  if (token) {
    hours = parseFloat(token[1].replace(',', '.'));
    return (hours % 24) * MILLISECONDS_IN_HOUR
  }

  // hh:mm or hhmm
  token = patterns.HHMM.exec(timeString);
  if (token) {
    hours = parseInt(token[1], 10);
    minutes = parseFloat(token[2].replace(',', '.'));
    return (hours % 24) * MILLISECONDS_IN_HOUR +
      minutes * MILLISECONDS_IN_MINUTE
  }

  // hh:mm:ss or hhmmss
  token = patterns.HHMMSS.exec(timeString);
  if (token) {
    hours = parseInt(token[1], 10);
    minutes = parseInt(token[2], 10);
    var seconds = parseFloat(token[3].replace(',', '.'));
    return (hours % 24) * MILLISECONDS_IN_HOUR +
      minutes * MILLISECONDS_IN_MINUTE +
      seconds * 1000
  }

  // Invalid ISO-formatted time
  return null
}

function parseTimezone (timezoneString) {
  var token;
  var absoluteOffset;

  // Z
  token = patterns.timezoneZ.exec(timezoneString);
  if (token) {
    return 0
  }

  // ±hh
  token = patterns.timezoneHH.exec(timezoneString);
  if (token) {
    absoluteOffset = parseInt(token[2], 10) * 60;
    return (token[1] === '+') ? -absoluteOffset : absoluteOffset
  }

  // ±hh:mm or ±hhmm
  token = patterns.timezoneHHMM.exec(timezoneString);
  if (token) {
    absoluteOffset = parseInt(token[2], 10) * 60 + parseInt(token[3], 10);
    return (token[1] === '+') ? -absoluteOffset : absoluteOffset
  }

  return 0
}

function dayOfISOYear (isoYear, week, day) {
  week = week || 0;
  day = day || 0;
  var date = new Date(0);
  date.setUTCFullYear(isoYear, 0, 4);
  var fourthOfJanuaryDay = date.getUTCDay() || 7;
  var diff = week * 7 + day + 1 - fourthOfJanuaryDay;
  date.setUTCDate(date.getUTCDate() + diff);
  return date
}

/**
 * @name isValid
 * @category Common Helpers
 * @summary Is the given date valid?
 *
 * @description
 * Returns false if argument is Invalid Date and true otherwise.
 * Argument is converted to Date using `toDate`. See [toDate]{@link https://date-fns.org/docs/toDate}
 * Invalid Date is a Date, whose time value is NaN.
 *
 * Time value of Date: http://es5.github.io/#x15.9.1.1
 *
 * @param {*} date - the date to check
 * @param {Options} [options] - the object with options. See [Options]{@link https://date-fns.org/docs/Options}
 * @param {0|1|2} [options.additionalDigits=2] - passed to `toDate`. See [toDate]{@link https://date-fns.org/docs/toDate}
 * @returns {Boolean} the date is valid
 * @throws {TypeError} 1 argument required
 * @throws {RangeError} `options.additionalDigits` must be 0, 1 or 2
 *
 * @example
 * // For the valid date:
 * var result = isValid(new Date(2014, 1, 31))
 * //=> true
 *
 * @example
 * // For the value, convertable into a date:
 * var result = isValid('2014-02-31')
 * //=> true
 *
 * @example
 * // For the invalid date:
 * var result = isValid(new Date(''))
 * //=> false
 */
function isValid (dirtyDate, dirtyOptions) {
  if (arguments.length < 1) {
    throw new TypeError('1 argument required, but only ' + arguments.length + ' present')
  }

  var date = toDate(dirtyDate, dirtyOptions);
  return !isNaN(date)
}

var formatDistanceLocale = {
  lessThanXSeconds: {
    one: 'less than a second',
    other: 'less than {{count}} seconds'
  },

  xSeconds: {
    one: '1 second',
    other: '{{count}} seconds'
  },

  halfAMinute: 'half a minute',

  lessThanXMinutes: {
    one: 'less than a minute',
    other: 'less than {{count}} minutes'
  },

  xMinutes: {
    one: '1 minute',
    other: '{{count}} minutes'
  },

  aboutXHours: {
    one: 'about 1 hour',
    other: 'about {{count}} hours'
  },

  xHours: {
    one: '1 hour',
    other: '{{count}} hours'
  },

  xDays: {
    one: '1 day',
    other: '{{count}} days'
  },

  aboutXMonths: {
    one: 'about 1 month',
    other: 'about {{count}} months'
  },

  xMonths: {
    one: '1 month',
    other: '{{count}} months'
  },

  aboutXYears: {
    one: 'about 1 year',
    other: 'about {{count}} years'
  },

  xYears: {
    one: '1 year',
    other: '{{count}} years'
  },

  overXYears: {
    one: 'over 1 year',
    other: 'over {{count}} years'
  },

  almostXYears: {
    one: 'almost 1 year',
    other: 'almost {{count}} years'
  }
};

function formatDistance (token, count, options) {
  options = options || {};

  var result;
  if (typeof formatDistanceLocale[token] === 'string') {
    result = formatDistanceLocale[token];
  } else if (count === 1) {
    result = formatDistanceLocale[token].one;
  } else {
    result = formatDistanceLocale[token].other.replace('{{count}}', count);
  }

  if (options.addSuffix) {
    if (options.comparison > 0) {
      return 'in ' + result
    } else {
      return result + ' ago'
    }
  }

  return result
}

var tokensToBeShortedPattern = /MMMM|MM|DD|dddd/g;

function buildShortLongFormat (format) {
  return format.replace(tokensToBeShortedPattern, function (token) {
    return token.slice(1)
  })
}

/**
 * @name buildFormatLongFn
 * @category Locale Helpers
 * @summary Build `formatLong` property for locale used by `format`, `formatRelative` and `parse` functions.
 *
 * @description
 * Build `formatLong` property for locale used by `format`, `formatRelative` and `parse` functions.
 * Returns a function which takes one of the following tokens as the argument:
 * `'LTS'`, `'LT'`, `'L'`, `'LL'`, `'LLL'`, `'l'`, `'ll'`, `'lll'`, `'llll'`
 * and returns a long format string written as `format` token strings.
 * See [format]{@link https://date-fns.org/docs/format}
 *
 * `'l'`, `'ll'`, `'lll'` and `'llll'` formats are built automatically
 * by shortening some of the tokens from corresponding unshortened formats
 * (e.g., if `LL` is `'MMMM DD YYYY'` then `ll` will be `MMM D YYYY`)
 *
 * @param {Object} obj - the object with long formats written as `format` token strings
 * @param {String} obj.LT - time format: hours and minutes
 * @param {String} obj.LTS - time format: hours, minutes and seconds
 * @param {String} obj.L - short date format: numeric day, month and year
 * @param {String} [obj.l] - short date format: numeric day, month and year (shortened)
 * @param {String} obj.LL - long date format: day, month in words, and year
 * @param {String} [obj.ll] - long date format: day, month in words, and year (shortened)
 * @param {String} obj.LLL - long date and time format
 * @param {String} [obj.lll] - long date and time format (shortened)
 * @param {String} obj.LLLL - long date, time and weekday format
 * @param {String} [obj.llll] - long date, time and weekday format (shortened)
 * @returns {Function} `formatLong` property of the locale
 *
 * @example
 * // For `en-US` locale:
 * locale.formatLong = buildFormatLongFn({
 *   LT: 'h:mm aa',
 *   LTS: 'h:mm:ss aa',
 *   L: 'MM/DD/YYYY',
 *   LL: 'MMMM D YYYY',
 *   LLL: 'MMMM D YYYY h:mm aa',
 *   LLLL: 'dddd, MMMM D YYYY h:mm aa'
 * })
 */
function buildFormatLongFn (obj) {
  var formatLongLocale = {
    LTS: obj.LTS,
    LT: obj.LT,
    L: obj.L,
    LL: obj.LL,
    LLL: obj.LLL,
    LLLL: obj.LLLL,
    l: obj.l || buildShortLongFormat(obj.L),
    ll: obj.ll || buildShortLongFormat(obj.LL),
    lll: obj.lll || buildShortLongFormat(obj.LLL),
    llll: obj.llll || buildShortLongFormat(obj.LLLL)
  };

  return function (token) {
    return formatLongLocale[token]
  }
}

var formatLong = buildFormatLongFn({
  LT: 'h:mm aa',
  LTS: 'h:mm:ss aa',
  L: 'MM/DD/YYYY',
  LL: 'MMMM D YYYY',
  LLL: 'MMMM D YYYY h:mm aa',
  LLLL: 'dddd, MMMM D YYYY h:mm aa'
});

var formatRelativeLocale = {
  lastWeek: '[last] dddd [at] LT',
  yesterday: '[yesterday at] LT',
  today: '[today at] LT',
  tomorrow: '[tomorrow at] LT',
  nextWeek: 'dddd [at] LT',
  other: 'L'
};

function formatRelative$1 (token, date, baseDate, options) {
  return formatRelativeLocale[token]
}

/**
 * @name buildLocalizeFn
 * @category Locale Helpers
 * @summary Build `localize.weekday`, `localize.month` and `localize.timeOfDay` properties for the locale.
 *
 * @description
 * Build `localize.weekday`, `localize.month` and `localize.timeOfDay` properties for the locale
 * used by `format` function.
 * If no `type` is supplied to the options of the resulting function, `defaultType` will be used (see example).
 *
 * `localize.weekday` function takes the weekday index as argument (0 - Sunday).
 * `localize.month` takes the month index (0 - January).
 * `localize.timeOfDay` takes the hours. Use `indexCallback` to convert them to an array index (see example).
 *
 * @param {Object} values - the object with arrays of values
 * @param {String} defaultType - the default type for the localize function
 * @param {Function} [indexCallback] - the callback which takes the resulting function argument
 *   and converts it into value array index
 * @returns {Function} the resulting function
 *
 * @example
 * var timeOfDayValues = {
 *   uppercase: ['AM', 'PM'],
 *   lowercase: ['am', 'pm'],
 *   long: ['a.m.', 'p.m.']
 * }
 * locale.localize.timeOfDay = buildLocalizeFn(timeOfDayValues, 'long', function (hours) {
 *   // 0 is a.m. array index, 1 is p.m. array index
 *   return (hours / 12) >= 1 ? 1 : 0
 * })
 * locale.localize.timeOfDay(16, {type: 'uppercase'}) //=> 'PM'
 * locale.localize.timeOfDay(5) //=> 'a.m.'
 */
function buildLocalizeFn (values, defaultType, indexCallback) {
  return function (dirtyIndex, dirtyOptions) {
    var options = dirtyOptions || {};
    var type = options.type ? String(options.type) : defaultType;
    var valuesArray = values[type] || values[defaultType];
    var index = indexCallback ? indexCallback(Number(dirtyIndex)) : Number(dirtyIndex);
    return valuesArray[index]
  }
}

/**
 * @name buildLocalizeArrayFn
 * @category Locale Helpers
 * @summary Build `localize.weekdays`, `localize.months` and `localize.timesOfDay` properties for the locale.
 *
 * @description
 * Build `localize.weekdays`, `localize.months` and `localize.timesOfDay` properties for the locale.
 * If no `type` is supplied to the options of the resulting function, `defaultType` will be used (see example).
 *
 * @param {Object} values - the object with arrays of values
 * @param {String} defaultType - the default type for the localize function
 * @returns {Function} the resulting function
 *
 * @example
 * var weekdayValues = {
 *   narrow: ['Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa'],
 *   short: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
 *   long: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday']
 * }
 * locale.localize.weekdays = buildLocalizeArrayFn(weekdayValues, 'long')
 * locale.localize.weekdays({type: 'narrow'}) //=> ['Su', 'Mo', ...]
 * locale.localize.weekdays() //=> ['Sunday', 'Monday', ...]
 */
function buildLocalizeArrayFn (values, defaultType) {
  return function (dirtyOptions) {
    var options = dirtyOptions || {};
    var type = options.type ? String(options.type) : defaultType;
    return values[type] || values[defaultType]
  }
}

// Note: in English, the names of days of the week and months are capitalized.
// If you are making a new locale based on this one, check if the same is true for the language you're working on.
// Generally, formatted dates should look like they are in the middle of a sentence,
// e.g. in Spanish language the weekdays and months should be in the lowercase.
var weekdayValues = {
  narrow: ['Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa'],
  short: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
  long: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday']
};

var monthValues = {
  short: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
  long: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December']
};

// `timeOfDay` is used to designate which part of the day it is, when used with 12-hour clock.
// Use the system which is used the most commonly in the locale.
// For example, if the country doesn't use a.m./p.m., you can use `night`/`morning`/`afternoon`/`evening`:
//
//   var timeOfDayValues = {
//     any: ['in the night', 'in the morning', 'in the afternoon', 'in the evening']
//   }
//
// And later:
//
//   var localize = {
//     // The callback takes the hours as the argument and returns the array index
//     timeOfDay: buildLocalizeFn(timeOfDayValues, 'any', function (hours) {
//       if (hours >= 17) {
//         return 3
//       } else if (hours >= 12) {
//         return 2
//       } else if (hours >= 4) {
//         return 1
//       } else {
//         return 0
//       }
//     }),
//     timesOfDay: buildLocalizeArrayFn(timeOfDayValues, 'any')
//   }
var timeOfDayValues = {
  uppercase: ['AM', 'PM'],
  lowercase: ['am', 'pm'],
  long: ['a.m.', 'p.m.']
};

function ordinalNumber (dirtyNumber, dirtyOptions) {
  var number = Number(dirtyNumber);

  // If ordinal numbers depend on context, for example,
  // if they are different for different grammatical genders,
  // use `options.unit`:
  //
  //   var options = dirtyOptions || {}
  //   var unit = String(options.unit)
  //
  // where `unit` can be 'month', 'quarter', 'week', 'isoWeek', 'dayOfYear',
  // 'dayOfMonth' or 'dayOfWeek'

  var rem100 = number % 100;
  if (rem100 > 20 || rem100 < 10) {
    switch (rem100 % 10) {
      case 1:
        return number + 'st'
      case 2:
        return number + 'nd'
      case 3:
        return number + 'rd'
    }
  }
  return number + 'th'
}

var localize = {
  ordinalNumber: ordinalNumber,
  weekday: buildLocalizeFn(weekdayValues, 'long'),
  weekdays: buildLocalizeArrayFn(weekdayValues, 'long'),
  month: buildLocalizeFn(monthValues, 'long'),
  months: buildLocalizeArrayFn(monthValues, 'long'),
  timeOfDay: buildLocalizeFn(timeOfDayValues, 'long', function (hours) {
    return (hours / 12) >= 1 ? 1 : 0
  }),
  timesOfDay: buildLocalizeArrayFn(timeOfDayValues, 'long')
};

/**
 * @name buildMatchFn
 * @category Locale Helpers
 * @summary Build `match.weekdays`, `match.months` and `match.timesOfDay` properties for the locale.
 *
 * @description
 * Build `match.weekdays`, `match.months` and `match.timesOfDay` properties for the locale used by `parse` function.
 * If no `type` is supplied to the options of the resulting function, `defaultType` will be used (see example).
 * The result of the match function will be passed into corresponding parser function
 * (`match.weekday`, `match.month` or `match.timeOfDay` respectively. See `buildParseFn`).
 *
 * @param {Object} values - the object with RegExps
 * @param {String} defaultType - the default type for the match function
 * @returns {Function} the resulting function
 *
 * @example
 * var matchWeekdaysPatterns = {
 *   narrow: /^(su|mo|tu|we|th|fr|sa)/i,
 *   short: /^(sun|mon|tue|wed|thu|fri|sat)/i,
 *   long: /^(sunday|monday|tuesday|wednesday|thursday|friday|saturday)/i
 * }
 * locale.match.weekdays = buildMatchFn(matchWeekdaysPatterns, 'long')
 * locale.match.weekdays('Sunday', {type: 'narrow'}) //=> ['Su', 'Su', ...]
 * locale.match.weekdays('Sunday') //=> ['Sunday', 'Sunday', ...]
 */
function buildMatchFn (patterns, defaultType) {
  return function (dirtyString, dirtyOptions) {
    var options = dirtyOptions || {};
    var type = options.type ? String(options.type) : defaultType;
    var pattern = patterns[type] || patterns[defaultType];
    var string = String(dirtyString);
    return string.match(pattern)
  }
}

/**
 * @name buildParseFn
 * @category Locale Helpers
 * @summary Build `match.weekday`, `match.month` and `match.timeOfDay` properties for the locale.
 *
 * @description
 * Build `match.weekday`, `match.month` and `match.timeOfDay` properties for the locale used by `parse` function.
 * The argument of the resulting function is the result of the corresponding match function
 * (`match.weekdays`, `match.months` or `match.timesOfDay` respectively. See `buildMatchFn`).
 *
 * @param {Object} values - the object with arrays of RegExps
 * @param {String} defaultType - the default type for the parser function
 * @returns {Function} the resulting function
 *
 * @example
 * var parseWeekdayPatterns = {
 *   any: [/^su/i, /^m/i, /^tu/i, /^w/i, /^th/i, /^f/i, /^sa/i]
 * }
 * locale.match.weekday = buildParseFn(matchWeekdaysPatterns, 'long')
 * var matchResult = locale.match.weekdays('Friday')
 * locale.match.weekday(matchResult) //=> 5
 */
function buildParseFn (patterns, defaultType) {
  return function (matchResult, dirtyOptions) {
    var options = dirtyOptions || {};
    var type = options.type ? String(options.type) : defaultType;
    var patternsArray = patterns[type] || patterns[defaultType];
    var string = matchResult[1];

    return patternsArray.findIndex(function (pattern) {
      return pattern.test(string)
    })
  }
}

/**
 * @name buildMatchPatternFn
 * @category Locale Helpers
 * @summary Build match function from a single RegExp.
 *
 * @description
 * Build match function from a single RegExp.
 * Usually used for building `match.ordinalNumbers` property of the locale.
 *
 * @param {Object} pattern - the RegExp
 * @returns {Function} the resulting function
 *
 * @example
 * locale.match.ordinalNumbers = buildMatchPatternFn(/^(\d+)(th|st|nd|rd)?/i)
 * locale.match.ordinalNumbers('3rd') //=> ['3rd', '3', 'rd', ...]
 */
function buildMatchPatternFn (pattern) {
  return function (dirtyString) {
    var string = String(dirtyString);
    return string.match(pattern)
  }
}

/**
 * @name parseDecimal
 * @category Locale Helpers
 * @summary Parses the match result into decimal number.
 *
 * @description
 * Parses the match result into decimal number.
 * Uses the string matched with the first set of parentheses of match RegExp.
 *
 * @param {Array} matchResult - the object returned by matching function
 * @returns {Number} the parsed value
 *
 * @example
 * locale.match = {
 *   ordinalNumbers: (dirtyString) {
 *     return String(dirtyString).match(/^(\d+)(th|st|nd|rd)?/i)
 *   },
 *   ordinalNumber: parseDecimal
 * }
 */
function parseDecimal (matchResult) {
  return parseInt(matchResult[1], 10)
}

var matchOrdinalNumbersPattern = /^(\d+)(th|st|nd|rd)?/i;

var matchWeekdaysPatterns = {
  narrow: /^(su|mo|tu|we|th|fr|sa)/i,
  short: /^(sun|mon|tue|wed|thu|fri|sat)/i,
  long: /^(sunday|monday|tuesday|wednesday|thursday|friday|saturday)/i
};

var parseWeekdayPatterns = {
  any: [/^su/i, /^m/i, /^tu/i, /^w/i, /^th/i, /^f/i, /^sa/i]
};

var matchMonthsPatterns = {
  short: /^(jan|feb|mar|apr|may|jun|jul|aug|sep|oct|nov|dec)/i,
  long: /^(january|february|march|april|may|june|july|august|september|october|november|december)/i
};

var parseMonthPatterns = {
  any: [/^ja/i, /^f/i, /^mar/i, /^ap/i, /^may/i, /^jun/i, /^jul/i, /^au/i, /^s/i, /^o/i, /^n/i, /^d/i]
};

// `timeOfDay` is used to designate which part of the day it is, when used with 12-hour clock.
// Use the system which is used the most commonly in the locale.
// For example, if the country doesn't use a.m./p.m., you can use `night`/`morning`/`afternoon`/`evening`:
//
//   var matchTimesOfDayPatterns = {
//     long: /^((in the)? (night|morning|afternoon|evening?))/i
//   }
//
//   var parseTimeOfDayPatterns = {
//     any: [/(night|morning)/i, /(afternoon|evening)/i]
//   }
var matchTimesOfDayPatterns = {
  short: /^(am|pm)/i,
  long: /^([ap]\.?\s?m\.?)/i
};

var parseTimeOfDayPatterns = {
  any: [/^a/i, /^p/i]
};

var match = {
  ordinalNumbers: buildMatchPatternFn(matchOrdinalNumbersPattern),
  ordinalNumber: parseDecimal,
  weekdays: buildMatchFn(matchWeekdaysPatterns, 'long'),
  weekday: buildParseFn(parseWeekdayPatterns, 'any'),
  months: buildMatchFn(matchMonthsPatterns, 'long'),
  month: buildParseFn(parseMonthPatterns, 'any'),
  timesOfDay: buildMatchFn(matchTimesOfDayPatterns, 'long'),
  timeOfDay: buildParseFn(parseTimeOfDayPatterns, 'any')
};

/**
 * @type {Locale}
 * @category Locales
 * @summary English locale (United States).
 * @language English
 * @iso-639-2 eng
 */
var locale = {
  formatDistance: formatDistance,
  formatLong: formatLong,
  formatRelative: formatRelative$1,
  localize: localize,
  match: match,
  options: {
    weekStartsOn: 0 /* Sunday */,
    firstWeekContainsDate: 1
  }
};

var MILLISECONDS_IN_DAY = 86400000;

// This function will be a part of public API when UTC function will be implemented.
// See issue: https://github.com/date-fns/date-fns/issues/376
function getUTCDayOfYear (dirtyDate, dirtyOptions) {
  var date = toDate(dirtyDate, dirtyOptions);
  var timestamp = date.getTime();
  date.setUTCMonth(0, 1);
  date.setUTCHours(0, 0, 0, 0);
  var startOfYearTimestamp = date.getTime();
  var difference = timestamp - startOfYearTimestamp;
  return Math.floor(difference / MILLISECONDS_IN_DAY) + 1
}

// This function will be a part of public API when UTC function will be implemented.
// See issue: https://github.com/date-fns/date-fns/issues/376
function startOfUTCISOWeek (dirtyDate, dirtyOptions) {
  var weekStartsOn = 1;

  var date = toDate(dirtyDate, dirtyOptions);
  var day = date.getUTCDay();
  var diff = (day < weekStartsOn ? 7 : 0) + day - weekStartsOn;

  date.setUTCDate(date.getUTCDate() - diff);
  date.setUTCHours(0, 0, 0, 0);
  return date
}

// This function will be a part of public API when UTC function will be implemented.
// See issue: https://github.com/date-fns/date-fns/issues/376
function getUTCISOWeekYear (dirtyDate, dirtyOptions) {
  var date = toDate(dirtyDate, dirtyOptions);
  var year = date.getUTCFullYear();

  var fourthOfJanuaryOfNextYear = new Date(0);
  fourthOfJanuaryOfNextYear.setUTCFullYear(year + 1, 0, 4);
  fourthOfJanuaryOfNextYear.setUTCHours(0, 0, 0, 0);
  var startOfNextYear = startOfUTCISOWeek(fourthOfJanuaryOfNextYear, dirtyOptions);

  var fourthOfJanuaryOfThisYear = new Date(0);
  fourthOfJanuaryOfThisYear.setUTCFullYear(year, 0, 4);
  fourthOfJanuaryOfThisYear.setUTCHours(0, 0, 0, 0);
  var startOfThisYear = startOfUTCISOWeek(fourthOfJanuaryOfThisYear, dirtyOptions);

  if (date.getTime() >= startOfNextYear.getTime()) {
    return year + 1
  } else if (date.getTime() >= startOfThisYear.getTime()) {
    return year
  } else {
    return year - 1
  }
}

// This function will be a part of public API when UTC function will be implemented.
// See issue: https://github.com/date-fns/date-fns/issues/376
function startOfUTCISOWeekYear (dirtyDate, dirtyOptions) {
  var year = getUTCISOWeekYear(dirtyDate, dirtyOptions);
  var fourthOfJanuary = new Date(0);
  fourthOfJanuary.setUTCFullYear(year, 0, 4);
  fourthOfJanuary.setUTCHours(0, 0, 0, 0);
  var date = startOfUTCISOWeek(fourthOfJanuary, dirtyOptions);
  return date
}

var MILLISECONDS_IN_WEEK = 604800000;

// This function will be a part of public API when UTC function will be implemented.
// See issue: https://github.com/date-fns/date-fns/issues/376
function getUTCISOWeek (dirtyDate, dirtyOptions) {
  var date = toDate(dirtyDate, dirtyOptions);
  var diff = startOfUTCISOWeek(date, dirtyOptions).getTime() - startOfUTCISOWeekYear(date, dirtyOptions).getTime();

  // Round the number of days to the nearest integer
  // because the number of milliseconds in a week is not constant
  // (e.g. it's different in the week of the daylight saving time clock shift)
  return Math.round(diff / MILLISECONDS_IN_WEEK) + 1
}

var formatters = {
  // Month: 1, 2, ..., 12
  'M': function (date) {
    return date.getUTCMonth() + 1
  },

  // Month: 1st, 2nd, ..., 12th
  'Mo': function (date, options) {
    var month = date.getUTCMonth() + 1;
    return options.locale.localize.ordinalNumber(month, {unit: 'month'})
  },

  // Month: 01, 02, ..., 12
  'MM': function (date) {
    return addLeadingZeros(date.getUTCMonth() + 1, 2)
  },

  // Month: Jan, Feb, ..., Dec
  'MMM': function (date, options) {
    return options.locale.localize.month(date.getUTCMonth(), {type: 'short'})
  },

  // Month: January, February, ..., December
  'MMMM': function (date, options) {
    return options.locale.localize.month(date.getUTCMonth(), {type: 'long'})
  },

  // Quarter: 1, 2, 3, 4
  'Q': function (date) {
    return Math.ceil((date.getUTCMonth() + 1) / 3)
  },

  // Quarter: 1st, 2nd, 3rd, 4th
  'Qo': function (date, options) {
    var quarter = Math.ceil((date.getUTCMonth() + 1) / 3);
    return options.locale.localize.ordinalNumber(quarter, {unit: 'quarter'})
  },

  // Day of month: 1, 2, ..., 31
  'D': function (date) {
    return date.getUTCDate()
  },

  // Day of month: 1st, 2nd, ..., 31st
  'Do': function (date, options) {
    return options.locale.localize.ordinalNumber(date.getUTCDate(), {unit: 'dayOfMonth'})
  },

  // Day of month: 01, 02, ..., 31
  'DD': function (date) {
    return addLeadingZeros(date.getUTCDate(), 2)
  },

  // Day of year: 1, 2, ..., 366
  'DDD': function (date) {
    return getUTCDayOfYear(date)
  },

  // Day of year: 1st, 2nd, ..., 366th
  'DDDo': function (date, options) {
    return options.locale.localize.ordinalNumber(getUTCDayOfYear(date), {unit: 'dayOfYear'})
  },

  // Day of year: 001, 002, ..., 366
  'DDDD': function (date) {
    return addLeadingZeros(getUTCDayOfYear(date), 3)
  },

  // Day of week: Su, Mo, ..., Sa
  'dd': function (date, options) {
    return options.locale.localize.weekday(date.getUTCDay(), {type: 'narrow'})
  },

  // Day of week: Sun, Mon, ..., Sat
  'ddd': function (date, options) {
    return options.locale.localize.weekday(date.getUTCDay(), {type: 'short'})
  },

  // Day of week: Sunday, Monday, ..., Saturday
  'dddd': function (date, options) {
    return options.locale.localize.weekday(date.getUTCDay(), {type: 'long'})
  },

  // Day of week: 0, 1, ..., 6
  'd': function (date) {
    return date.getUTCDay()
  },

  // Day of week: 0th, 1st, 2nd, ..., 6th
  'do': function (date, options) {
    return options.locale.localize.ordinalNumber(date.getUTCDay(), {unit: 'dayOfWeek'})
  },

  // Day of ISO week: 1, 2, ..., 7
  'E': function (date) {
    return date.getUTCDay() || 7
  },

  // ISO week: 1, 2, ..., 53
  'W': function (date) {
    return getUTCISOWeek(date)
  },

  // ISO week: 1st, 2nd, ..., 53th
  'Wo': function (date, options) {
    return options.locale.localize.ordinalNumber(getUTCISOWeek(date), {unit: 'isoWeek'})
  },

  // ISO week: 01, 02, ..., 53
  'WW': function (date) {
    return addLeadingZeros(getUTCISOWeek(date), 2)
  },

  // Year: 00, 01, ..., 99
  'YY': function (date) {
    return addLeadingZeros(date.getUTCFullYear(), 4).substr(2)
  },

  // Year: 1900, 1901, ..., 2099
  'YYYY': function (date) {
    return addLeadingZeros(date.getUTCFullYear(), 4)
  },

  // ISO week-numbering year: 00, 01, ..., 99
  'GG': function (date) {
    return String(getUTCISOWeekYear(date)).substr(2)
  },

  // ISO week-numbering year: 1900, 1901, ..., 2099
  'GGGG': function (date) {
    return getUTCISOWeekYear(date)
  },

  // Hour: 0, 1, ... 23
  'H': function (date) {
    return date.getUTCHours()
  },

  // Hour: 00, 01, ..., 23
  'HH': function (date) {
    return addLeadingZeros(date.getUTCHours(), 2)
  },

  // Hour: 1, 2, ..., 12
  'h': function (date) {
    var hours = date.getUTCHours();
    if (hours === 0) {
      return 12
    } else if (hours > 12) {
      return hours % 12
    } else {
      return hours
    }
  },

  // Hour: 01, 02, ..., 12
  'hh': function (date) {
    return addLeadingZeros(formatters['h'](date), 2)
  },

  // Minute: 0, 1, ..., 59
  'm': function (date) {
    return date.getUTCMinutes()
  },

  // Minute: 00, 01, ..., 59
  'mm': function (date) {
    return addLeadingZeros(date.getUTCMinutes(), 2)
  },

  // Second: 0, 1, ..., 59
  's': function (date) {
    return date.getUTCSeconds()
  },

  // Second: 00, 01, ..., 59
  'ss': function (date) {
    return addLeadingZeros(date.getUTCSeconds(), 2)
  },

  // 1/10 of second: 0, 1, ..., 9
  'S': function (date) {
    return Math.floor(date.getUTCMilliseconds() / 100)
  },

  // 1/100 of second: 00, 01, ..., 99
  'SS': function (date) {
    return addLeadingZeros(Math.floor(date.getUTCMilliseconds() / 10), 2)
  },

  // Millisecond: 000, 001, ..., 999
  'SSS': function (date) {
    return addLeadingZeros(date.getUTCMilliseconds(), 3)
  },

  // Timezone: -01:00, +00:00, ... +12:00
  'Z': function (date, options) {
    var originalDate = options._originalDate || date;
    return formatTimezone(originalDate.getTimezoneOffset(), ':')
  },

  // Timezone: -0100, +0000, ... +1200
  'ZZ': function (date, options) {
    var originalDate = options._originalDate || date;
    return formatTimezone(originalDate.getTimezoneOffset())
  },

  // Seconds timestamp: 512969520
  'X': function (date, options) {
    var originalDate = options._originalDate || date;
    return Math.floor(originalDate.getTime() / 1000)
  },

  // Milliseconds timestamp: 512969520900
  'x': function (date, options) {
    var originalDate = options._originalDate || date;
    return originalDate.getTime()
  },

  // AM, PM
  'A': function (date, options) {
    return options.locale.localize.timeOfDay(date.getUTCHours(), {type: 'uppercase'})
  },

  // am, pm
  'a': function (date, options) {
    return options.locale.localize.timeOfDay(date.getUTCHours(), {type: 'lowercase'})
  },

  // a.m., p.m.
  'aa': function (date, options) {
    return options.locale.localize.timeOfDay(date.getUTCHours(), {type: 'long'})
  }
};

function formatTimezone (offset, delimeter) {
  delimeter = delimeter || '';
  var sign = offset > 0 ? '-' : '+';
  var absOffset = Math.abs(offset);
  var hours = Math.floor(absOffset / 60);
  var minutes = absOffset % 60;
  return sign + addLeadingZeros(hours, 2) + delimeter + addLeadingZeros(minutes, 2)
}

function addLeadingZeros (number, targetLength) {
  var output = Math.abs(number).toString();
  while (output.length < targetLength) {
    output = '0' + output;
  }
  return output
}

function cloneObject (dirtyObject) {
  dirtyObject = dirtyObject || {};
  var object = {};

  for (var property in dirtyObject) {
    if (dirtyObject.hasOwnProperty(property)) {
      object[property] = dirtyObject[property];
    }
  }

  return object
}

// This function will be a part of public API when UTC function will be implemented.
// See issue: https://github.com/date-fns/date-fns/issues/376
function addUTCMinutes (dirtyDate, dirtyAmount, dirtyOptions) {
  var date = toDate(dirtyDate, dirtyOptions);
  var amount = Number(dirtyAmount);
  date.setUTCMinutes(date.getUTCMinutes() + amount);
  return date
}

var longFormattingTokensRegExp = /(\[[^[]*])|(\\)?(LTS|LT|LLLL|LLL|LL|L|llll|lll|ll|l)/g;
var defaultFormattingTokensRegExp = /(\[[^[]*])|(\\)?(x|ss|s|mm|m|hh|h|do|dddd|ddd|dd|d|aa|a|ZZ|Z|YYYY|YY|X|Wo|WW|W|SSS|SS|S|Qo|Q|Mo|MMMM|MMM|MM|M|HH|H|GGGG|GG|E|Do|DDDo|DDDD|DDD|DD|D|A|.)/g;

/**
 * @name format
 * @category Common Helpers
 * @summary Format the date.
 *
 * @description
 * Return the formatted date string in the given format.
 *
 * Accepted tokens:
 * | Unit                    | Token | Result examples                  |
 * |-------------------------|-------|----------------------------------|
 * | Month                   | M     | 1, 2, ..., 12                    |
 * |                         | Mo    | 1st, 2nd, ..., 12th              |
 * |                         | MM    | 01, 02, ..., 12                  |
 * |                         | MMM   | Jan, Feb, ..., Dec               |
 * |                         | MMMM  | January, February, ..., December |
 * | Quarter                 | Q     | 1, 2, 3, 4                       |
 * |                         | Qo    | 1st, 2nd, 3rd, 4th               |
 * | Day of month            | D     | 1, 2, ..., 31                    |
 * |                         | Do    | 1st, 2nd, ..., 31st              |
 * |                         | DD    | 01, 02, ..., 31                  |
 * | Day of year             | DDD   | 1, 2, ..., 366                   |
 * |                         | DDDo  | 1st, 2nd, ..., 366th             |
 * |                         | DDDD  | 001, 002, ..., 366               |
 * | Day of week             | d     | 0, 1, ..., 6                     |
 * |                         | do    | 0th, 1st, ..., 6th               |
 * |                         | dd    | Su, Mo, ..., Sa                  |
 * |                         | ddd   | Sun, Mon, ..., Sat               |
 * |                         | dddd  | Sunday, Monday, ..., Saturday    |
 * | Day of ISO week         | E     | 1, 2, ..., 7                     |
 * | ISO week                | W     | 1, 2, ..., 53                    |
 * |                         | Wo    | 1st, 2nd, ..., 53rd              |
 * |                         | WW    | 01, 02, ..., 53                  |
 * | Year                    | YY    | 00, 01, ..., 99                  |
 * |                         | YYYY  | 1900, 1901, ..., 2099            |
 * | ISO week-numbering year | GG    | 00, 01, ..., 99                  |
 * |                         | GGGG  | 1900, 1901, ..., 2099            |
 * | AM/PM                   | A     | AM, PM                           |
 * |                         | a     | am, pm                           |
 * |                         | aa    | a.m., p.m.                       |
 * | Hour                    | H     | 0, 1, ... 23                     |
 * |                         | HH    | 00, 01, ... 23                   |
 * |                         | h     | 1, 2, ..., 12                    |
 * |                         | hh    | 01, 02, ..., 12                  |
 * | Minute                  | m     | 0, 1, ..., 59                    |
 * |                         | mm    | 00, 01, ..., 59                  |
 * | Second                  | s     | 0, 1, ..., 59                    |
 * |                         | ss    | 00, 01, ..., 59                  |
 * | 1/10 of second          | S     | 0, 1, ..., 9                     |
 * | 1/100 of second         | SS    | 00, 01, ..., 99                  |
 * | Millisecond             | SSS   | 000, 001, ..., 999               |
 * | Timezone                | Z     | -01:00, +00:00, ... +12:00       |
 * |                         | ZZ    | -0100, +0000, ..., +1200         |
 * | Seconds timestamp       | X     | 512969520                        |
 * | Milliseconds timestamp  | x     | 512969520900                     |
 * | Long format             | LT    | 05:30 a.m.                       |
 * |                         | LTS   | 05:30:15 a.m.                    |
 * |                         | L     | 07/02/1995                       |
 * |                         | l     | 7/2/1995                         |
 * |                         | LL    | July 2 1995                      |
 * |                         | ll    | Jul 2 1995                       |
 * |                         | LLL   | July 2 1995 05:30 a.m.           |
 * |                         | lll   | Jul 2 1995 05:30 a.m.            |
 * |                         | LLLL  | Sunday, July 2 1995 05:30 a.m.   |
 * |                         | llll  | Sun, Jul 2 1995 05:30 a.m.       |
 *
 * The characters wrapped in square brackets are escaped.
 *
 * The result may vary by locale.
 *
 * @param {Date|String|Number} date - the original date
 * @param {String} format - the string of tokens
 * @param {Options} [options] - the object with options. See [Options]{@link https://date-fns.org/docs/Options}
 * @param {0|1|2} [options.additionalDigits=2] - passed to `toDate`. See [toDate]{@link https://date-fns.org/docs/toDate}
 * @param {Locale} [options.locale=defaultLocale] - the locale object. See [Locale]{@link https://date-fns.org/docs/Locale}
 * @returns {String} the formatted date string
 * @throws {TypeError} 2 arguments required
 * @throws {RangeError} `options.additionalDigits` must be 0, 1 or 2
 * @throws {RangeError} `options.locale` must contain `localize` property
 * @throws {RangeError} `options.locale` must contain `formatLong` property
 *
 * @example
 * // Represent 11 February 2014 in middle-endian format:
 * var result = format(
 *   new Date(2014, 1, 11),
 *   'MM/DD/YYYY'
 * )
 * //=> '02/11/2014'
 *
 * @example
 * // Represent 2 July 2014 in Esperanto:
 * import { eoLocale } from 'date-fns/locale/eo'
 * var result = format(
 *   new Date(2014, 6, 2),
 *   'Do [de] MMMM YYYY',
 *   {locale: eoLocale}
 * )
 * //=> '2-a de julio 2014'
 */
function format (dirtyDate, dirtyFormatStr, dirtyOptions) {
  if (arguments.length < 2) {
    throw new TypeError('2 arguments required, but only ' + arguments.length + ' present')
  }

  var formatStr = String(dirtyFormatStr);
  var options = dirtyOptions || {};

  var locale$$1 = options.locale || locale;

  if (!locale$$1.localize) {
    throw new RangeError('locale must contain localize property')
  }

  if (!locale$$1.formatLong) {
    throw new RangeError('locale must contain formatLong property')
  }

  var localeFormatters = locale$$1.formatters || {};
  var formattingTokensRegExp = locale$$1.formattingTokensRegExp || defaultFormattingTokensRegExp;
  var formatLong = locale$$1.formatLong;

  var originalDate = toDate(dirtyDate, options);

  if (!isValid(originalDate, options)) {
    return 'Invalid Date'
  }

  // Convert the date in system timezone to the same date in UTC+00:00 timezone.
  // This ensures that when UTC functions will be implemented, locales will be compatible with them.
  // See an issue about UTC functions: https://github.com/date-fns/date-fns/issues/376
  var timezoneOffset = originalDate.getTimezoneOffset();
  var utcDate = addUTCMinutes(originalDate, -timezoneOffset, options);

  var formatterOptions = cloneObject(options);
  formatterOptions.locale = locale$$1;
  formatterOptions.formatters = formatters;

  // When UTC functions will be implemented, options._originalDate will likely be a part of public API.
  // Right now, please don't use it in locales. If you have to use an original date,
  // please restore it from `date`, adding a timezone offset to it.
  formatterOptions._originalDate = originalDate;

  var result = formatStr
    .replace(longFormattingTokensRegExp, function (substring) {
      if (substring[0] === '[') {
        return substring
      }

      if (substring[0] === '\\') {
        return cleanEscapedString(substring)
      }

      return formatLong(substring)
    })
    .replace(formattingTokensRegExp, function (substring) {
      var formatter = localeFormatters[substring] || formatters[substring];

      if (formatter) {
        return formatter(utcDate, formatterOptions)
      } else {
        return cleanEscapedString(substring)
      }
    });

  return result
}

function cleanEscapedString (input) {
  if (input.match(/\[[\s\S]/)) {
    return input.replace(/^\[|]$/g, '')
  }
  return input.replace(/\\/g, '')
}

/**
 * @name startOfDay
 * @category Day Helpers
 * @summary Return the start of a day for the given date.
 *
 * @description
 * Return the start of a day for the given date.
 * The result will be in the local timezone.
 *
 * @param {Date|String|Number} date - the original date
 * @param {Options} [options] - the object with options. See [Options]{@link https://date-fns.org/docs/Options}
 * @param {0|1|2} [options.additionalDigits=2] - passed to `toDate`. See [toDate]{@link https://date-fns.org/docs/toDate}
 * @returns {Date} the start of a day
 * @throws {TypeError} 1 argument required
 * @throws {RangeError} `options.additionalDigits` must be 0, 1 or 2
 *
 * @example
 * // The start of a day for 2 September 2014 11:55:00:
 * var result = startOfDay(new Date(2014, 8, 2, 11, 55, 0))
 * //=> Tue Sep 02 2014 00:00:00
 */
function startOfDay (dirtyDate, dirtyOptions) {
  if (arguments.length < 1) {
    throw new TypeError('1 argument required, but only ' + arguments.length + ' present')
  }

  var date = toDate(dirtyDate, dirtyOptions);
  date.setHours(0, 0, 0, 0);
  return date
}

var MILLISECONDS_IN_MINUTE$1 = 60000;
var MILLISECONDS_IN_DAY$1 = 86400000;

/**
 * @name differenceInCalendarDays
 * @category Day Helpers
 * @summary Get the number of calendar days between the given dates.
 *
 * @description
 * Get the number of calendar days between the given dates. This means that the times are removed
 * from the dates and then the difference in days is calculated.
 *
 * @param {Date|String|Number} dateLeft - the later date
 * @param {Date|String|Number} dateRight - the earlier date
 * @param {Options} [options] - the object with options. See [Options]{@link https://date-fns.org/docs/Options}
 * @param {0|1|2} [options.additionalDigits=2] - passed to `toDate`. See [toDate]{@link https://date-fns.org/docs/toDate}
 * @returns {Number} the number of calendar days
 * @throws {TypeError} 2 arguments required
 * @throws {RangeError} `options.additionalDigits` must be 0, 1 or 2
 *
 * @example
 * // How many calendar days are between
 * // 2 July 2011 23:00:00 and 2 July 2012 00:00:00?
 * var result = differenceInCalendarDays(
 *   new Date(2012, 6, 2, 0, 0),
 *   new Date(2011, 6, 2, 23, 0)
 * )
 * //=> 366
 * // How many calendar days are between
 * // 2 July 2011 23:59:00 and 3 July 2011 00:01:00?
 * var result = differenceInCalendarDays(
 *   new Date(2011, 6, 2, 0, 1),
 *   new Date(2011, 6, 2, 23, 59)
 * )
 * //=> 1
 */
function differenceInCalendarDays (dirtyDateLeft, dirtyDateRight, dirtyOptions) {
  if (arguments.length < 2) {
    throw new TypeError('2 arguments required, but only ' + arguments.length + ' present')
  }

  var startOfDayLeft = startOfDay(dirtyDateLeft, dirtyOptions);
  var startOfDayRight = startOfDay(dirtyDateRight, dirtyOptions);

  var timestampLeft = startOfDayLeft.getTime() -
    startOfDayLeft.getTimezoneOffset() * MILLISECONDS_IN_MINUTE$1;
  var timestampRight = startOfDayRight.getTime() -
    startOfDayRight.getTimezoneOffset() * MILLISECONDS_IN_MINUTE$1;

  // Round the number of days to the nearest integer
  // because the number of milliseconds in a day is not constant
  // (e.g. it's different in the day of the daylight saving time clock shift)
  return Math.round((timestampLeft - timestampRight) / MILLISECONDS_IN_DAY$1)
}

/**
 * @name addMilliseconds
 * @category Millisecond Helpers
 * @summary Add the specified number of milliseconds to the given date.
 *
 * @description
 * Add the specified number of milliseconds to the given date.
 *
 * @param {Date|String|Number} date - the date to be changed
 * @param {Number} amount - the amount of milliseconds to be added
 * @param {Options} [options] - the object with options. See [Options]{@link https://date-fns.org/docs/Options}
 * @param {0|1|2} [options.additionalDigits=2] - passed to `toDate`. See [toDate]{@link https://date-fns.org/docs/toDate}
 * @returns {Date} the new date with the milliseconds added
 * @throws {TypeError} 2 arguments required
 * @throws {RangeError} `options.additionalDigits` must be 0, 1 or 2
 *
 * @example
 * // Add 750 milliseconds to 10 July 2014 12:45:30.000:
 * var result = addMilliseconds(new Date(2014, 6, 10, 12, 45, 30, 0), 750)
 * //=> Thu Jul 10 2014 12:45:30.750
 */
function addMilliseconds (dirtyDate, dirtyAmount, dirtyOptions) {
  if (arguments.length < 2) {
    throw new TypeError('2 arguments required, but only ' + arguments.length + ' present')
  }

  var timestamp = toDate(dirtyDate, dirtyOptions).getTime();
  var amount = Number(dirtyAmount);
  return new Date(timestamp + amount)
}

var MILLISECONDS_IN_MINUTE$2 = 60000;

/**
 * @name addMinutes
 * @category Minute Helpers
 * @summary Add the specified number of minutes to the given date.
 *
 * @description
 * Add the specified number of minutes to the given date.
 *
 * @param {Date|String|Number} date - the date to be changed
 * @param {Number} amount - the amount of minutes to be added
 * @param {Options} [options] - the object with options. See [Options]{@link https://date-fns.org/docs/Options}
 * @param {0|1|2} [options.additionalDigits=2] - passed to `toDate`. See [toDate]{@link https://date-fns.org/docs/toDate}
 * @returns {Date} the new date with the minutes added
 * @throws {TypeError} 2 arguments required
 * @throws {RangeError} `options.additionalDigits` must be 0, 1 or 2
 *
 * @example
 * // Add 30 minutes to 10 July 2014 12:00:00:
 * var result = addMinutes(new Date(2014, 6, 10, 12, 0), 30)
 * //=> Thu Jul 10 2014 12:30:00
 */
function addMinutes (dirtyDate, dirtyAmount, dirtyOptions) {
  if (arguments.length < 2) {
    throw new TypeError('2 arguments required, but only ' + arguments.length + ' present')
  }

  var amount = Number(dirtyAmount);
  return addMilliseconds(dirtyDate, amount * MILLISECONDS_IN_MINUTE$2, dirtyOptions)
}

/**
 * @name subMinutes
 * @category Minute Helpers
 * @summary Subtract the specified number of minutes from the given date.
 *
 * @description
 * Subtract the specified number of minutes from the given date.
 *
 * @param {Date|String|Number} date - the date to be changed
 * @param {Number} amount - the amount of minutes to be subtracted
 * @param {Options} [options] - the object with options. See [Options]{@link https://date-fns.org/docs/Options}
 * @param {0|1|2} [options.additionalDigits=2] - passed to `toDate`. See [toDate]{@link https://date-fns.org/docs/toDate}
 * @returns {Date} the new date with the mintues subtracted
 * @throws {TypeError} 2 arguments required
 * @throws {RangeError} `options.additionalDigits` must be 0, 1 or 2
 *
 * @example
 * // Subtract 30 minutes from 10 July 2014 12:00:00:
 * var result = subMinutes(new Date(2014, 6, 10, 12, 0), 30)
 * //=> Thu Jul 10 2014 11:30:00
 */
function subMinutes (dirtyDate, dirtyAmount, dirtyOptions) {
  if (arguments.length < 2) {
    throw new TypeError('2 arguments required, but only ' + arguments.length + ' present')
  }

  var amount = Number(dirtyAmount);
  return addMinutes(dirtyDate, -amount, dirtyOptions)
}

/**
 * @name formatRelative
 * @category Common Helpers
 * @summary Represent the date in words relative to the given base date.
 *
 * @description
 * Represent the date in words relative to the given base date.
 *
 * | Distance to the base date | Result                    |
 * |---------------------------|---------------------------|
 * | Previous 6 days           | last Sunday at 04:30 a.m. |
 * | Last day                  | yesterday at 04:30 a.m.   |
 * | Same day                  | today at 04:30 a.m.       |
 * | Next day                  | tomorrow at 04:30 a.m.    |
 * | Next 6 days               | Sunday at 04:30 a.m.      |
 * | Other                     | 12/31/2017                |
 *
 * @param {Date|String|Number} date - the date to format
 * @param {Date|String|Number} baseDate - the date to compare with
 * @param {Options} [options] - the object with options. See [Options]{@link https://date-fns.org/docs/Options}
 * @param {Locale} [options.locale=defaultLocale] - the locale object. See [Locale]{@link https://date-fns.org/docs/Locale}
 * @returns {String} the date in words
 * @throws {TypeError} 2 arguments required
 * @throws {RangeError} `options.additionalDigits` must be 0, 1 or 2
 * @throws {RangeError} `options.locale` must contain `localize` property
 * @throws {RangeError} `options.locale` must contain `formatLong` property
 * @throws {RangeError} `options.locale` must contain `formatRelative` property
 */
function formatRelative (dirtyDate, dirtyBaseDate, dirtyOptions) {
  if (arguments.length < 2) {
    throw new TypeError('2 arguments required, but only ' + arguments.length + ' present')
  }

  var date = toDate(dirtyDate, dirtyOptions);
  var baseDate = toDate(dirtyBaseDate, dirtyOptions);

  var options = dirtyOptions || {};
  var locale$$1 = options.locale || locale;

  if (!locale$$1.localize) {
    throw new RangeError('locale must contain localize property')
  }

  if (!locale$$1.formatLong) {
    throw new RangeError('locale must contain formatLong property')
  }

  if (!locale$$1.formatRelative) {
    throw new RangeError('locale must contain formatRelative property')
  }

  var diff = differenceInCalendarDays(date, baseDate, options);

  if (isNaN(diff)) {
    return 'Invalid Date'
  }

  var token;
  if (diff < -6) {
    token = 'other';
  } else if (diff < -1) {
    token = 'lastWeek';
  } else if (diff < 0) {
    token = 'yesterday';
  } else if (diff < 1) {
    token = 'today';
  } else if (diff < 2) {
    token = 'tomorrow';
  } else if (diff < 7) {
    token = 'nextWeek';
  } else {
    token = 'other';
  }

  var utcDate = subMinutes(date, date.getTimezoneOffset(), options);
  var utcBaseDate = subMinutes(baseDate, date.getTimezoneOffset(), options);
  var formatStr = locale$$1.formatRelative(token, utcDate, utcBaseDate, options);
  return format(date, formatStr, options)
}

return formatRelative;

})();