80 lines
2.4 KiB
JavaScript
80 lines
2.4 KiB
JavaScript
"use strict";
|
|
exports.eachWeekOfInterval = eachWeekOfInterval;
|
|
var _index = require("./addWeeks.js");
|
|
var _index2 = require("./startOfWeek.js");
|
|
var _index3 = require("./toDate.js");
|
|
|
|
/**
|
|
* The {@link eachWeekOfInterval} function options.
|
|
*/
|
|
|
|
/**
|
|
* @name eachWeekOfInterval
|
|
* @category Interval Helpers
|
|
* @summary Return the array of weeks within the specified time interval.
|
|
*
|
|
* @description
|
|
* Return the array of weeks 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 weeks from the week of the interval start to the week of the interval end
|
|
*
|
|
* @example
|
|
* // Each week within interval 6 October 2014 - 23 November 2014:
|
|
* const result = eachWeekOfInterval({
|
|
* start: new Date(2014, 9, 6),
|
|
* end: new Date(2014, 10, 23)
|
|
* })
|
|
* //=> [
|
|
* // Sun Oct 05 2014 00:00:00,
|
|
* // Sun Oct 12 2014 00:00:00,
|
|
* // Sun Oct 19 2014 00:00:00,
|
|
* // Sun Oct 26 2014 00:00:00,
|
|
* // Sun Nov 02 2014 00:00:00,
|
|
* // Sun Nov 09 2014 00:00:00,
|
|
* // Sun Nov 16 2014 00:00:00,
|
|
* // Sun Nov 23 2014 00:00:00
|
|
* // ]
|
|
*/
|
|
function eachWeekOfInterval(interval, options) {
|
|
const startDate = (0, _index3.toDate)(interval.start);
|
|
const endDate = (0, _index3.toDate)(interval.end);
|
|
|
|
let reversed = +startDate > +endDate;
|
|
const startDateWeek = reversed
|
|
? (0, _index2.startOfWeek)(endDate, options)
|
|
: (0, _index2.startOfWeek)(startDate, options);
|
|
const endDateWeek = reversed
|
|
? (0, _index2.startOfWeek)(startDate, options)
|
|
: (0, _index2.startOfWeek)(endDate, options);
|
|
|
|
// Some timezones switch DST at midnight, making start of day unreliable in these timezones, 3pm is a safe bet
|
|
startDateWeek.setHours(15);
|
|
endDateWeek.setHours(15);
|
|
|
|
const endTime = +endDateWeek.getTime();
|
|
let currentDate = startDateWeek;
|
|
|
|
let step = options?.step ?? 1;
|
|
if (!step) return [];
|
|
if (step < 0) {
|
|
step = -step;
|
|
reversed = !reversed;
|
|
}
|
|
|
|
const dates = [];
|
|
|
|
while (+currentDate <= endTime) {
|
|
currentDate.setHours(0);
|
|
dates.push((0, _index3.toDate)(currentDate));
|
|
currentDate = (0, _index.addWeeks)(currentDate, step);
|
|
currentDate.setHours(15);
|
|
}
|
|
|
|
return reversed ? dates.reverse() : dates;
|
|
}
|