initial commit: scaffolding

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diff --git a/node_modules/date-fns/esm/parseISO/index.js b/node_modules/date-fns/esm/parseISO/index.js
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+import { millisecondsInHour, millisecondsInMinute } from "../constants/index.js";
+import requiredArgs from "../_lib/requiredArgs/index.js";
+import toInteger from "../_lib/toInteger/index.js";
+/**
+ * @name parseISO
+ * @category Common Helpers
+ * @summary Parse ISO string
+ *
+ * @description
+ * Parse the given string in ISO 8601 format and return an instance of Date.
+ *
+ * Function accepts complete ISO 8601 formats as well as partial implementations.
+ * ISO 8601: http://en.wikipedia.org/wiki/ISO_8601
+ *
+ * If the argument isn't a string, the function cannot parse the string or
+ * the values are invalid, it returns Invalid Date.
+ *
+ * @param {String} argument - the value to convert
+ * @param {Object} [options] - an object with 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:
+ * const result = parseISO('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:
+ * const result = parseISO('+02014101', { additionalDigits: 1 })
+ * //=> Fri Apr 11 2014 00:00:00
+ */
+export default function parseISO(argument, options) {
+  var _options$additionalDi;
+  requiredArgs(1, arguments);
+  var additionalDigits = toInteger((_options$additionalDi = options === null || options === void 0 ? void 0 : options.additionalDigits) !== null && _options$additionalDi !== void 0 ? _options$additionalDi : 2);
+  if (additionalDigits !== 2 && additionalDigits !== 1 && additionalDigits !== 0) {
+    throw new RangeError('additionalDigits must be 0, 1 or 2');
+  }
+  if (!(typeof argument === 'string' || Object.prototype.toString.call(argument) === '[object String]')) {
+    return new Date(NaN);
+  }
+  var dateStrings = splitDateString(argument);
+  var date;
+  if (dateStrings.date) {
+    var parseYearResult = parseYear(dateStrings.date, additionalDigits);
+    date = parseDate(parseYearResult.restDateString, parseYearResult.year);
+  }
+  if (!date || isNaN(date.getTime())) {
+    return new Date(NaN);
+  }
+  var timestamp = date.getTime();
+  var time = 0;
+  var offset;
+  if (dateStrings.time) {
+    time = parseTime(dateStrings.time);
+    if (isNaN(time)) {
+      return new Date(NaN);
+    }
+  }
+  if (dateStrings.timezone) {
+    offset = parseTimezone(dateStrings.timezone);
+    if (isNaN(offset)) {
+      return new Date(NaN);
+    }
+  } else {
+    var dirtyDate = new Date(timestamp + time);
+    // js parsed string assuming it's in UTC timezone
+    // but we need it to be parsed in our timezone
+    // so we use utc values to build date in our timezone.
+    // Year values from 0 to 99 map to the years 1900 to 1999
+    // so set year explicitly with setFullYear.
+    var result = new Date(0);
+    result.setFullYear(dirtyDate.getUTCFullYear(), dirtyDate.getUTCMonth(), dirtyDate.getUTCDate());
+    result.setHours(dirtyDate.getUTCHours(), dirtyDate.getUTCMinutes(), dirtyDate.getUTCSeconds(), dirtyDate.getUTCMilliseconds());
+    return result;
+  }
+  return new Date(timestamp + time + offset);
+}
+var patterns = {
+  dateTimeDelimiter: /[T ]/,
+  timeZoneDelimiter: /[Z ]/i,
+  timezone: /([Z+-].*)$/
+};
+var dateRegex = /^-?(?:(\d{3})|(\d{2})(?:-?(\d{2}))?|W(\d{2})(?:-?(\d{1}))?|)$/;
+var timeRegex = /^(\d{2}(?:[.,]\d*)?)(?::?(\d{2}(?:[.,]\d*)?))?(?::?(\d{2}(?:[.,]\d*)?))?$/;
+var timezoneRegex = /^([+-])(\d{2})(?::?(\d{2}))?$/;
+function splitDateString(dateString) {
+  var dateStrings = {};
+  var array = dateString.split(patterns.dateTimeDelimiter);
+  var timeString;
+
+  // The regex match should only return at maximum two array elements.
+  // [date], [time], or [date, time].
+  if (array.length > 2) {
+    return dateStrings;
+  }
+  if (/:/.test(array[0])) {
+    timeString = array[0];
+  } else {
+    dateStrings.date = array[0];
+    timeString = array[1];
+    if (patterns.timeZoneDelimiter.test(dateStrings.date)) {
+      dateStrings.date = dateString.split(patterns.timeZoneDelimiter)[0];
+      timeString = dateString.substr(dateStrings.date.length, dateString.length);
+    }
+  }
+  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 regex = new RegExp('^(?:(\\d{4}|[+-]\\d{' + (4 + additionalDigits) + '})|(\\d{2}|[+-]\\d{' + (2 + additionalDigits) + '})$)');
+  var captures = dateString.match(regex);
+  // Invalid ISO-formatted year
+  if (!captures) return {
+    year: NaN,
+    restDateString: ''
+  };
+  var year = captures[1] ? parseInt(captures[1]) : null;
+  var century = captures[2] ? parseInt(captures[2]) : null;
+
+  // either year or century is null, not both
+  return {
+    year: century === null ? year : century * 100,
+    restDateString: dateString.slice((captures[1] || captures[2]).length)
+  };
+}
+function parseDate(dateString, year) {
+  // Invalid ISO-formatted year
+  if (year === null) return new Date(NaN);
+  var captures = dateString.match(dateRegex);
+  // Invalid ISO-formatted string
+  if (!captures) return new Date(NaN);
+  var isWeekDate = !!captures[4];
+  var dayOfYear = parseDateUnit(captures[1]);
+  var month = parseDateUnit(captures[2]) - 1;
+  var day = parseDateUnit(captures[3]);
+  var week = parseDateUnit(captures[4]);
+  var dayOfWeek = parseDateUnit(captures[5]) - 1;
+  if (isWeekDate) {
+    if (!validateWeekDate(year, week, dayOfWeek)) {
+      return new Date(NaN);
+    }
+    return dayOfISOWeekYear(year, week, dayOfWeek);
+  } else {
+    var date = new Date(0);
+    if (!validateDate(year, month, day) || !validateDayOfYearDate(year, dayOfYear)) {
+      return new Date(NaN);
+    }
+    date.setUTCFullYear(year, month, Math.max(dayOfYear, day));
+    return date;
+  }
+}
+function parseDateUnit(value) {
+  return value ? parseInt(value) : 1;
+}
+function parseTime(timeString) {
+  var captures = timeString.match(timeRegex);
+  if (!captures) return NaN; // Invalid ISO-formatted time
+
+  var hours = parseTimeUnit(captures[1]);
+  var minutes = parseTimeUnit(captures[2]);
+  var seconds = parseTimeUnit(captures[3]);
+  if (!validateTime(hours, minutes, seconds)) {
+    return NaN;
+  }
+  return hours * millisecondsInHour + minutes * millisecondsInMinute + seconds * 1000;
+}
+function parseTimeUnit(value) {
+  return value && parseFloat(value.replace(',', '.')) || 0;
+}
+function parseTimezone(timezoneString) {
+  if (timezoneString === 'Z') return 0;
+  var captures = timezoneString.match(timezoneRegex);
+  if (!captures) return 0;
+  var sign = captures[1] === '+' ? -1 : 1;
+  var hours = parseInt(captures[2]);
+  var minutes = captures[3] && parseInt(captures[3]) || 0;
+  if (!validateTimezone(hours, minutes)) {
+    return NaN;
+  }
+  return sign * (hours * millisecondsInHour + minutes * millisecondsInMinute);
+}
+function dayOfISOWeekYear(isoWeekYear, week, day) {
+  var date = new Date(0);
+  date.setUTCFullYear(isoWeekYear, 0, 4);
+  var fourthOfJanuaryDay = date.getUTCDay() || 7;
+  var diff = (week - 1) * 7 + day + 1 - fourthOfJanuaryDay;
+  date.setUTCDate(date.getUTCDate() + diff);
+  return date;
+}
+
+// Validation functions
+
+// February is null to handle the leap year (using ||)
+var daysInMonths = [31, null, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
+function isLeapYearIndex(year) {
+  return year % 400 === 0 || year % 4 === 0 && year % 100 !== 0;
+}
+function validateDate(year, month, date) {
+  return month >= 0 && month <= 11 && date >= 1 && date <= (daysInMonths[month] || (isLeapYearIndex(year) ? 29 : 28));
+}
+function validateDayOfYearDate(year, dayOfYear) {
+  return dayOfYear >= 1 && dayOfYear <= (isLeapYearIndex(year) ? 366 : 365);
+}
+function validateWeekDate(_year, week, day) {
+  return week >= 1 && week <= 53 && day >= 0 && day <= 6;
+}
+function validateTime(hours, minutes, seconds) {
+  if (hours === 24) {
+    return minutes === 0 && seconds === 0;
+  }
+  return seconds >= 0 && seconds < 60 && minutes >= 0 && minutes < 60 && hours >= 0 && hours < 25;
+}
+function validateTimezone(_hours, minutes) {
+  return minutes >= 0 && minutes <= 59;
+}
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