init

mc_test/node_modules/date-fns/esm/getDaysInMonth/index.js

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+import toDate from "../toDate/index.js";
+import requiredArgs from "../_lib/requiredArgs/index.js";
+/**
+ * @name getDaysInMonth
+ * @category Month Helpers
+ * @summary Get the number of days in a month of the given date.
+ *
+ * @description
+ * Get the number of days in a month of the given date.
+ *
+ * @param {Date|Number} date - the given date
+ * @returns {Number} the number of days in a month
+ * @throws {TypeError} 1 argument required
+ *
+ * @example
+ * // How many days are in February 2000?
+ * const result = getDaysInMonth(new Date(2000, 1))
+ * //=> 29
+ */
+export default function getDaysInMonth(dirtyDate) {
+  requiredArgs(1, arguments);
+  var date = toDate(dirtyDate);
+  var year = date.getFullYear();
+  var monthIndex = date.getMonth();
+  var lastDayOfMonth = new Date(0);
+  lastDayOfMonth.setFullYear(year, monthIndex + 1, 0);
+  lastDayOfMonth.setHours(0, 0, 0, 0);
+  return lastDayOfMonth.getDate();
+}