Initial commit: Crypto trader application

frontend/node_modules/date-fns/getDaysInMonth.mjs

@@ -0,0 +1,34 @@
+import { toDate } from "./toDate.mjs";
+import { constructFrom } from "./constructFrom.mjs";
+
+/**
+ * @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.
+ *
+ * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
+ *
+ * @param date - The given date
+ *
+ * @returns The number of days in a month
+ *
+ * @example
+ * // How many days are in February 2000?
+ * const result = getDaysInMonth(new Date(2000, 1))
+ * //=> 29
+ */
+export function getDaysInMonth(date) {
+  const _date = toDate(date);
+  const year = _date.getFullYear();
+  const monthIndex = _date.getMonth();
+  const lastDayOfMonth = constructFrom(date, 0);
+  lastDayOfMonth.setFullYear(year, monthIndex + 1, 0);
+  lastDayOfMonth.setHours(0, 0, 0, 0);
+  return lastDayOfMonth.getDate();
+}
+
+// Fallback for modularized imports:
+export default getDaysInMonth;