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 王天杨
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import { addHours } from "./addHours.mjs";
import { toDate } from "./toDate.mjs";
/**
* The {@link eachHourOfInterval} function options.
*/
/**
* @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.
*
* @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.
* @param options - An object with options.
*
* @returns The array with starts of hours from the hour of the interval start to the hour of the interval end
*
* @example
* // Each hour between 6 October 2014, 12:00 and 6 October 2014, 15:00
* const 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 function eachHourOfInterval(interval, options) {
const startDate = toDate(interval.start);
const endDate = toDate(interval.end);
let reversed = +startDate > +endDate;
const endTime = reversed ? +startDate : +endDate;
let currentDate = reversed ? endDate : startDate;
currentDate.setMinutes(0, 0, 0);
let step = options?.step ?? 1;
if (!step) return [];
if (step < 0) {
step = -step;
reversed = !reversed;
}
const dates = [];
while (+currentDate <= endTime) {
dates.push(toDate(currentDate));
currentDate = addHours(currentDate, step);
}
return reversed ? dates.reverse() : dates;
}
// Fallback for modularized imports:
export default eachHourOfInterval;
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