initial commit: scaffolding

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diff --git a/node_modules/date-fns/differenceInMonths/index.js b/node_modules/date-fns/differenceInMonths/index.js
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+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = differenceInMonths;
+var _index = _interopRequireDefault(require("../toDate/index.js"));
+var _index2 = _interopRequireDefault(require("../differenceInCalendarMonths/index.js"));
+var _index3 = _interopRequireDefault(require("../compareAsc/index.js"));
+var _index4 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
+var _index5 = _interopRequireDefault(require("../isLastDayOfMonth/index.js"));
+/**
+ * @name differenceInMonths
+ * @category Month Helpers
+ * @summary Get the number of full months between the given dates.
+ *
+ * @description
+ * Get the number of full months between the given dates using trunc as a default rounding method.
+ *
+ * @param {Date|Number} dateLeft - the later date
+ * @param {Date|Number} dateRight - the earlier date
+ * @returns {Number} the number of full months
+ * @throws {TypeError} 2 arguments required
+ *
+ * @example
+ * // How many full months are between 31 January 2014 and 1 September 2014?
+ * const result = differenceInMonths(new Date(2014, 8, 1), new Date(2014, 0, 31))
+ * //=> 7
+ */
+function differenceInMonths(dirtyDateLeft, dirtyDateRight) {
+  (0, _index4.default)(2, arguments);
+  var dateLeft = (0, _index.default)(dirtyDateLeft);
+  var dateRight = (0, _index.default)(dirtyDateRight);
+  var sign = (0, _index3.default)(dateLeft, dateRight);
+  var difference = Math.abs((0, _index2.default)(dateLeft, dateRight));
+  var result;
+
+  // Check for the difference of less than month
+  if (difference < 1) {
+    result = 0;
+  } else {
+    if (dateLeft.getMonth() === 1 && dateLeft.getDate() > 27) {
+      // This will check if the date is end of Feb and assign a higher end of month date
+      // to compare it with Jan
+      dateLeft.setDate(30);
+    }
+    dateLeft.setMonth(dateLeft.getMonth() - sign * difference);
+
+    // Math.abs(diff in full months - diff in calendar months) === 1 if last calendar month is not full
+    // If so, result must be decreased by 1 in absolute value
+    var isLastMonthNotFull = (0, _index3.default)(dateLeft, dateRight) === -sign;
+
+    // Check for cases of one full calendar month
+    if ((0, _index5.default)((0, _index.default)(dirtyDateLeft)) && difference === 1 && (0, _index3.default)(dirtyDateLeft, dateRight) === 1) {
+      isLastMonthNotFull = false;
+    }
+    result = sign * (difference - Number(isLastMonthNotFull));
+  }
+
+  // Prevent negative zero
+  return result === 0 ? 0 : result;
+}
+module.exports = exports.default;
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