date-fns-jalali/eachMonthOfInterval.js

Modern JavaScript date utility library for jalali calendar

"use strict";
exports.eachMonthOfInterval = eachMonthOfInterval;
var _index = require("./toDate.js");
var _index2 = require("./_core/getMonth.js");
var _index3 = require("./_core/setMonth.js");
var _index4 = require("./_core/setDate.js");

/**
 * The {@link eachMonthOfInterval} function options.
 */

/**
 * @name eachMonthOfInterval
 * @category Interval Helpers
 * @summary Return the array of months within the specified time interval.
 *
 * @description
 * Return the array of months within the specified time interval.
 *
 * @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 interval - The interval
 *
 * @returns The array with starts of months from the month of the interval start to the month of the interval end
 *
 * @example
 * // Each month between 6 February 2014 and 10 August 2014:
 * const result = eachMonthOfInterval({
 *   start: new Date(2014, 1, 6),
 *   end: new Date(2014, 7, 10)
 * })
 * //=> [
 * //   Sat Feb 01 2014 00:00:00,
 * //   Sat Mar 01 2014 00:00:00,
 * //   Tue Apr 01 2014 00:00:00,
 * //   Thu May 01 2014 00:00:00,
 * //   Sun Jun 01 2014 00:00:00,
 * //   Tue Jul 01 2014 00:00:00,
 * //   Fri Aug 01 2014 00:00:00
 * // ]
 */
function eachMonthOfInterval(interval, options) {
  const startDate = (0, _index.toDate)(interval.start);
  const endDate = (0, _index.toDate)(interval.end);

  let reversed = +startDate > +endDate;
  const endTime = reversed ? +startDate : +endDate;
  const currentDate = reversed ? endDate : startDate;
  currentDate.setHours(0, 0, 0, 0);
  (0, _index4.setDate)(currentDate, 1);

  let step = options?.step ?? 1;
  if (!step) return [];
  if (step < 0) {
    step = -step;
    reversed = !reversed;
  }

  const dates = [];

  while (+currentDate <= endTime) {
    dates.push((0, _index.toDate)(currentDate));
    (0, _index3.setMonth)(
      currentDate,
      (0, _index2.getMonth)(currentDate) + step,
    );
  }

  return reversed ? dates.reverse() : dates;
}