| 12345678910111213141516171819202122232425262728293031323334 |
- 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;
|