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backend/node_modules/date-fns/eachWeekOfInterval/index.js

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+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = eachWeekOfInterval;
+var _index = _interopRequireDefault(require("../addWeeks/index.js"));
+var _index2 = _interopRequireDefault(require("../startOfWeek/index.js"));
+var _index3 = _interopRequireDefault(require("../toDate/index.js"));
+var _index4 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
+/**
+ * @name eachWeekOfInterval
+ * @category Interval Helpers
+ * @summary Return the array of weeks within the specified time interval.
+ *
+ * @description
+ * Return the array of weeks within the specified time interval.
+ *
+ * @param {Interval} interval - the interval. See [Interval]{@link https://date-fns.org/docs/Interval}
+ * @param {Object} [options] - an object with options.
+ * @param {Locale} [options.locale=defaultLocale] - the locale object. See [Locale]{@link https://date-fns.org/docs/Locale}
+ * @param {0|1|2|3|4|5|6} [options.weekStartsOn=0] - the index of the first day of the week (0 - Sunday)
+ * @returns {Date[]} the array with starts of weeks from the week of the interval start to the week of the interval end
+ * @throws {TypeError} 1 argument required
+ * @throws {RangeError} `options.weekStartsOn` must be 0, 1, ..., 6
+ * @throws {RangeError} The start of an interval cannot be after its end
+ * @throws {RangeError} Date in interval cannot be `Invalid Date`
+ *
+ * @example
+ * // Each week within interval 6 October 2014 - 23 November 2014:
+ * const result = eachWeekOfInterval({
+ *   start: new Date(2014, 9, 6),
+ *   end: new Date(2014, 10, 23)
+ * })
+ * //=> [
+ * //   Sun Oct 05 2014 00:00:00,
+ * //   Sun Oct 12 2014 00:00:00,
+ * //   Sun Oct 19 2014 00:00:00,
+ * //   Sun Oct 26 2014 00:00:00,
+ * //   Sun Nov 02 2014 00:00:00,
+ * //   Sun Nov 09 2014 00:00:00,
+ * //   Sun Nov 16 2014 00:00:00,
+ * //   Sun Nov 23 2014 00:00:00
+ * // ]
+ */
+function eachWeekOfInterval(dirtyInterval, options) {
+  (0, _index4.default)(1, arguments);
+  var interval = dirtyInterval || {};
+  var startDate = (0, _index3.default)(interval.start);
+  var endDate = (0, _index3.default)(interval.end);
+  var endTime = endDate.getTime();
+
+  // Throw an exception if start date is after end date or if any date is `Invalid Date`
+  if (!(startDate.getTime() <= endTime)) {
+    throw new RangeError('Invalid interval');
+  }
+  var startDateWeek = (0, _index2.default)(startDate, options);
+  var endDateWeek = (0, _index2.default)(endDate, options);
+
+  // Some timezones switch DST at midnight, making start of day unreliable in these timezones, 3pm is a safe bet
+  startDateWeek.setHours(15);
+  endDateWeek.setHours(15);
+  endTime = endDateWeek.getTime();
+  var weeks = [];
+  var currentWeek = startDateWeek;
+  while (currentWeek.getTime() <= endTime) {
+    currentWeek.setHours(0);
+    weeks.push((0, _index3.default)(currentWeek));
+    currentWeek = (0, _index.default)(currentWeek, 1);
+    currentWeek.setHours(15);
+  }
+  return weeks;
+}
+module.exports = exports.default;