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diff --git a/node_modules/date-fns/sub/index.js b/node_modules/date-fns/sub/index.js
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+++ b/node_modules/date-fns/sub/index.js
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+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = sub;
+var _typeof2 = _interopRequireDefault(require("@babel/runtime/helpers/typeof"));
+var _index = _interopRequireDefault(require("../subDays/index.js"));
+var _index2 = _interopRequireDefault(require("../subMonths/index.js"));
+var _index3 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
+var _index4 = _interopRequireDefault(require("../_lib/toInteger/index.js"));
+/**
+ * @name sub
+ * @category Common Helpers
+ * @summary Subtract the specified years, months, weeks, days, hours, minutes and seconds from the given date.
+ *
+ * @description
+ * Subtract the specified years, months, weeks, days, hours, minutes and seconds from the given date.
+ *
+ * @param {Date|Number} date - the date to be changed
+ * @param {Duration} duration - the object with years, months, weeks, days, hours, minutes and seconds to be subtracted
+ *
+ * | Key     | Description                        |
+ * |---------|------------------------------------|
+ * | years   | Amount of years to be subtracted   |
+ * | months  | Amount of months to be subtracted  |
+ * | weeks   | Amount of weeks to be subtracted   |
+ * | days    | Amount of days to be subtracted    |
+ * | hours   | Amount of hours to be subtracted   |
+ * | minutes | Amount of minutes to be subtracted |
+ * | seconds | Amount of seconds to be subtracted |
+ *
+ * All values default to 0
+ *
+ * @returns {Date} the new date with the seconds subtracted
+ * @throws {TypeError} 2 arguments required
+ *
+ * @example
+ * // Subtract the following duration from 15 June 2017 15:29:20
+ * const result = sub(new Date(2017, 5, 15, 15, 29, 20), {
+ *   years: 2,
+ *   months: 9,
+ *   weeks: 1,
+ *   days: 7,
+ *   hours: 5,
+ *   minutes: 9,
+ *   seconds: 30
+ * })
+ * //=> Mon Sep 1 2014 10:19:50
+ */
+function sub(date, duration) {
+  (0, _index3.default)(2, arguments);
+  if (!duration || (0, _typeof2.default)(duration) !== 'object') return new Date(NaN);
+  var years = duration.years ? (0, _index4.default)(duration.years) : 0;
+  var months = duration.months ? (0, _index4.default)(duration.months) : 0;
+  var weeks = duration.weeks ? (0, _index4.default)(duration.weeks) : 0;
+  var days = duration.days ? (0, _index4.default)(duration.days) : 0;
+  var hours = duration.hours ? (0, _index4.default)(duration.hours) : 0;
+  var minutes = duration.minutes ? (0, _index4.default)(duration.minutes) : 0;
+  var seconds = duration.seconds ? (0, _index4.default)(duration.seconds) : 0;
+
+  // Subtract years and months
+  var dateWithoutMonths = (0, _index2.default)(date, months + years * 12);
+
+  // Subtract weeks and days
+  var dateWithoutDays = (0, _index.default)(dateWithoutMonths, days + weeks * 7);
+
+  // Subtract hours, minutes and seconds
+  var minutestoSub = minutes + hours * 60;
+  var secondstoSub = seconds + minutestoSub * 60;
+  var mstoSub = secondstoSub * 1000;
+  var finalDate = new Date(dateWithoutDays.getTime() - mstoSub);
+  return finalDate;
+}
+module.exports = exports.default;
+\ No newline at end of file