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

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+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = differenceInCalendarYears;
+var _index = _interopRequireDefault(require("../toDate/index.js"));
+var _index2 = _interopRequireDefault(require("../_lib/requiredArgs/index.js"));
+/**
+ * @name differenceInCalendarYears
+ * @category Year Helpers
+ * @summary Get the number of calendar years between the given dates.
+ *
+ * @description
+ * Get the number of calendar years between the given dates.
+ *
+ * @param {Date|Number} dateLeft - the later date
+ * @param {Date|Number} dateRight - the earlier date
+ * @returns {Number} the number of calendar years
+ * @throws {TypeError} 2 arguments required
+ *
+ * @example
+ * // How many calendar years are between 31 December 2013 and 11 February 2015?
+ * const result = differenceInCalendarYears(
+ *   new Date(2015, 1, 11),
+ *   new Date(2013, 11, 31)
+ * )
+ * //=> 2
+ */
+function differenceInCalendarYears(dirtyDateLeft, dirtyDateRight) {
+  (0, _index2.default)(2, arguments);
+  var dateLeft = (0, _index.default)(dirtyDateLeft);
+  var dateRight = (0, _index.default)(dirtyDateRight);
+  return dateLeft.getFullYear() - dateRight.getFullYear();
+}
+module.exports = exports.default;