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diff --git a/node_modules/date-fns/differenceInCalendarDays/index.js b/node_modules/date-fns/differenceInCalendarDays/index.js
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+++ b/node_modules/date-fns/differenceInCalendarDays/index.js
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+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = differenceInCalendarDays;
+var _index = _interopRequireDefault(require("../_lib/getTimezoneOffsetInMilliseconds/index.js"));
+var _index2 = _interopRequireDefault(require("../startOfDay/index.js"));
+var _index3 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
+var MILLISECONDS_IN_DAY = 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|Number} dateLeft - the later date
+ * @param {Date|Number} dateRight - the earlier date
+ * @returns {Number} the number of calendar days
+ * @throws {TypeError} 2 arguments required
+ *
+ * @example
+ * // How many calendar days are between
+ * // 2 July 2011 23:00:00 and 2 July 2012 00:00:00?
+ * const 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?
+ * const result = differenceInCalendarDays(
+ *   new Date(2011, 6, 3, 0, 1),
+ *   new Date(2011, 6, 2, 23, 59)
+ * )
+ * //=> 1
+ */
+function differenceInCalendarDays(dirtyDateLeft, dirtyDateRight) {
+  (0, _index3.default)(2, arguments);
+  var startOfDayLeft = (0, _index2.default)(dirtyDateLeft);
+  var startOfDayRight = (0, _index2.default)(dirtyDateRight);
+  var timestampLeft = startOfDayLeft.getTime() - (0, _index.default)(startOfDayLeft);
+  var timestampRight = startOfDayRight.getTime() - (0, _index.default)(startOfDayRight);
+
+  // 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);
+}
+module.exports = exports.default;
+\ No newline at end of file