index.js
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import addHours from '../addHours/index.js';
import toDate from '../toDate/index.js';
import requiredArgs from '../_lib/requiredArgs/index.js';
/**
* @name eachHourOfInterval
* @category Interval Helpers
* @summary Return the array of hours within the specified time interval.
*
* @description
* Return the array of hours within the specified time interval.
*
* @param {Interval} interval - the interval. See [Interval]{@link docs/types/Interval}
* @param {Object} [options] - an object with options.
* @param {Number} [options.step=1] - the step to increment by. The value should be more than 1.
* @returns {Date[]} the array with starts of hours from the hour of the interval start to the hour of the interval end
* @throws {TypeError} 1 argument required
* @throws {RangeError} `options.step` must be a number greater than 1
* @throws {RangeError} The start of an interval cannot be after its end
* @throws {RangeError} Date in interval cannot be `Invalid Date`
*
* @example
* // Each hour between 6 October 2014, 12:00 and 10 October 2014, 15:00
* var result = eachHourOfInterval({
* start: new Date(2014, 9, 6, 12),
* end: new Date(2014, 9, 6, 15)
* })
* //=> [
* // Mon Oct 06 2014 12:00:00,
* // Mon Oct 06 2014 13:00:00,
* // Mon Oct 06 2014 14:00:00,
* // Mon Oct 06 2014 15:00:00
* // ]
*/
export default function eachHourOfInterval(dirtyInterval, options) {
requiredArgs(1, arguments);
var interval = dirtyInterval || {};
var startDate = toDate(interval.start);
var endDate = toDate(interval.end);
var startTime = startDate.getTime();
var endTime = endDate.getTime(); // Throw an exception if start date is after end date or if any date is `Invalid Date`
if (!(startTime <= endTime)) {
throw new RangeError('Invalid interval');
}
var dates = [];
var currentDate = startDate;
currentDate.setMinutes(0, 0, 0);
var step = options && 'step' in options ? Number(options.step) : 1;
if (step < 1 || isNaN(step)) throw new RangeError('`options.step` must be a number greater than 1');
while (currentDate.getTime() <= endTime) {
dates.push(toDate(currentDate));
currentDate = addHours(currentDate, step);
}
return dates;
}