bc518174
 王天杨
提交两个项目文件
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"use strict";
exports.getWeekOfMonth = getWeekOfMonth;
var _index = require("./getDate.js");
var _index2 = require("./getDay.js");
var _index3 = require("./startOfMonth.js");
var _index4 = require("./_lib/defaultOptions.js");
/**
* The {@link getWeekOfMonth} function options.
*/
/**
* @name getWeekOfMonth
* @category Week Helpers
* @summary Get the week of the month of the given date.
*
* @description
* Get the week of the month of the given date.
*
* @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 date - The given date
* @param options - An object with options.
*
* @returns The week of month
*
* @example
* // Which week of the month is 9 November 2017?
* const result = getWeekOfMonth(new Date(2017, 10, 9))
* //=> 2
*/
function getWeekOfMonth(date, options) {
const defaultOptions = (0, _index4.getDefaultOptions)();
const weekStartsOn =
options?.weekStartsOn ??
options?.locale?.options?.weekStartsOn ??
defaultOptions.weekStartsOn ??
defaultOptions.locale?.options?.weekStartsOn ??
0;
const currentDayOfMonth = (0, _index.getDate)(date);
if (isNaN(currentDayOfMonth)) return NaN;
const startWeekDay = (0, _index2.getDay)((0, _index3.startOfMonth)(date));
let lastDayOfFirstWeek = weekStartsOn - startWeekDay;
if (lastDayOfFirstWeek <= 0) lastDayOfFirstWeek += 7;
const remainingDaysAfterFirstWeek = currentDayOfMonth - lastDayOfFirstWeek;
return Math.ceil(remainingDaysAfterFirstWeek / 7) + 1;
}
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