update

node_modules/luxon/src/impl/conversions.js

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+import {
+  integerBetween,
+  isLeapYear,
+  timeObject,
+  daysInYear,
+  daysInMonth,
+  weeksInWeekYear,
+  isInteger
+} from "./util.js";
+import Invalid from "./invalid.js";
+
+const nonLeapLadder = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334],
+  leapLadder = [0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335];
+
+function unitOutOfRange(unit, value) {
+  return new Invalid(
+    "unit out of range",
+    `you specified ${value} (of type ${typeof value}) as a ${unit}, which is invalid`
+  );
+}
+
+function dayOfWeek(year, month, day) {
+  const js = new Date(Date.UTC(year, month - 1, day)).getUTCDay();
+  return js === 0 ? 7 : js;
+}
+
+function computeOrdinal(year, month, day) {
+  return day + (isLeapYear(year) ? leapLadder : nonLeapLadder)[month - 1];
+}
+
+function uncomputeOrdinal(year, ordinal) {
+  const table = isLeapYear(year) ? leapLadder : nonLeapLadder,
+    month0 = table.findIndex(i => i < ordinal),
+    day = ordinal - table[month0];
+  return { month: month0 + 1, day };
+}
+
+/**
+ * @private
+ */
+
+export function gregorianToWeek(gregObj) {
+  const { year, month, day } = gregObj,
+    ordinal = computeOrdinal(year, month, day),
+    weekday = dayOfWeek(year, month, day);
+
+  let weekNumber = Math.floor((ordinal - weekday + 10) / 7),
+    weekYear;
+
+  if (weekNumber < 1) {
+    weekYear = year - 1;
+    weekNumber = weeksInWeekYear(weekYear);
+  } else if (weekNumber > weeksInWeekYear(year)) {
+    weekYear = year + 1;
+    weekNumber = 1;
+  } else {
+    weekYear = year;
+  }
+
+  return Object.assign({ weekYear, weekNumber, weekday }, timeObject(gregObj));
+}
+
+export function weekToGregorian(weekData) {
+  const { weekYear, weekNumber, weekday } = weekData,
+    weekdayOfJan4 = dayOfWeek(weekYear, 1, 4),
+    yearInDays = daysInYear(weekYear);
+
+  let ordinal = weekNumber * 7 + weekday - weekdayOfJan4 - 3,
+    year;
+
+  if (ordinal < 1) {
+    year = weekYear - 1;
+    ordinal += daysInYear(year);
+  } else if (ordinal > yearInDays) {
+    year = weekYear + 1;
+    ordinal -= daysInYear(weekYear);
+  } else {
+    year = weekYear;
+  }
+
+  const { month, day } = uncomputeOrdinal(year, ordinal);
+
+  return Object.assign({ year, month, day }, timeObject(weekData));
+}
+
+export function gregorianToOrdinal(gregData) {
+  const { year, month, day } = gregData,
+    ordinal = computeOrdinal(year, month, day);
+
+  return Object.assign({ year, ordinal }, timeObject(gregData));
+}
+
+export function ordinalToGregorian(ordinalData) {
+  const { year, ordinal } = ordinalData,
+    { month, day } = uncomputeOrdinal(year, ordinal);
+
+  return Object.assign({ year, month, day }, timeObject(ordinalData));
+}
+
+export function hasInvalidWeekData(obj) {
+  const validYear = isInteger(obj.weekYear),
+    validWeek = integerBetween(obj.weekNumber, 1, weeksInWeekYear(obj.weekYear)),
+    validWeekday = integerBetween(obj.weekday, 1, 7);
+
+  if (!validYear) {
+    return unitOutOfRange("weekYear", obj.weekYear);
+  } else if (!validWeek) {
+    return unitOutOfRange("week", obj.week);
+  } else if (!validWeekday) {
+    return unitOutOfRange("weekday", obj.weekday);
+  } else return false;
+}
+
+export function hasInvalidOrdinalData(obj) {
+  const validYear = isInteger(obj.year),
+    validOrdinal = integerBetween(obj.ordinal, 1, daysInYear(obj.year));
+
+  if (!validYear) {
+    return unitOutOfRange("year", obj.year);
+  } else if (!validOrdinal) {
+    return unitOutOfRange("ordinal", obj.ordinal);
+  } else return false;
+}
+
+export function hasInvalidGregorianData(obj) {
+  const validYear = isInteger(obj.year),
+    validMonth = integerBetween(obj.month, 1, 12),
+    validDay = integerBetween(obj.day, 1, daysInMonth(obj.year, obj.month));
+
+  if (!validYear) {
+    return unitOutOfRange("year", obj.year);
+  } else if (!validMonth) {
+    return unitOutOfRange("month", obj.month);
+  } else if (!validDay) {
+    return unitOutOfRange("day", obj.day);
+  } else return false;
+}
+
+export function hasInvalidTimeData(obj) {
+  const { hour, minute, second, millisecond } = obj;
+  const validHour =
+      integerBetween(hour, 0, 23) ||
+      (hour === 24 && minute === 0 && second === 0 && millisecond === 0),
+    validMinute = integerBetween(minute, 0, 59),
+    validSecond = integerBetween(second, 0, 59),
+    validMillisecond = integerBetween(millisecond, 0, 999);
+
+  if (!validHour) {
+    return unitOutOfRange("hour", hour);
+  } else if (!validMinute) {
+    return unitOutOfRange("minute", minute);
+  } else if (!validSecond) {
+    return unitOutOfRange("second", second);
+  } else if (!validMillisecond) {
+    return unitOutOfRange("millisecond", millisecond);
+  } else return false;
+}