index.js
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import toDate from '../toDate/index.js';
import requiredArgs from '../_lib/requiredArgs/index.js';
/**
* @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.
*
* @param {Interval} interval - the interval. See [Interval]{@link docs/types/Interval}
* @returns {Date[]} the array with starts of months from the month of the interval start to the month of the interval end
* @throws {TypeError} 1 argument required
* @throws {RangeError} The start of an interval cannot be after its end
* @throws {RangeError} Date in interval cannot be `Invalid Date`
*
* @example
* // Each month between 6 February 2014 and 10 August 2014:
* var 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
* // ]
*/
export default function eachMonthOfInterval(dirtyInterval) {
requiredArgs(1, arguments);
var interval = dirtyInterval || {};
var startDate = toDate(interval.start);
var endDate = toDate(interval.end);
var endTime = endDate.getTime(); // Throw an exception if start date is after end date or if any date is `Invalid Date`
if (!(startDate.getTime() <= endTime)) {
throw new RangeError('Invalid interval');
}
var dates = [];
var currentDate = startDate;
currentDate.setHours(0, 0, 0, 0);
currentDate.setDate(1);
while (currentDate.getTime() <= endTime) {
dates.push(toDate(currentDate));
currentDate.setMonth(currentDate.getMonth() + 1);
}
return dates;
}