Marc Mintel
5397309103
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54 lines
1.6 KiB
Plaintext
54 lines
1.6 KiB
Plaintext
import { toDate } from "./toDate.mjs";
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import { getDefaultOptions } from "./_lib/defaultOptions.mjs";
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/**
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* The {@link lastDayOfWeek} function options.
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*/
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/**
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* @name lastDayOfWeek
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* @category Week Helpers
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* @summary Return the last day of a week for the given date.
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*
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* @description
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* Return the last day of a week for the given date.
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* The result will be in the local timezone.
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*
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* @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).
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*
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* @param date - The original date
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* @param options - An object with options
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*
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* @returns The last day of a week
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*
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* @example
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* // The last day of a week for 2 September 2014 11:55:00:
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* const result = lastDayOfWeek(new Date(2014, 8, 2, 11, 55, 0))
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* //=> Sat Sep 06 2014 00:00:00
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*
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* @example
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* // If the week starts on Monday, the last day of the week for 2 September 2014 11:55:00:
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* const result = lastDayOfWeek(new Date(2014, 8, 2, 11, 55, 0), { weekStartsOn: 1 })
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* //=> Sun Sep 07 2014 00:00:00
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*/
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export function lastDayOfWeek(date, options) {
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const defaultOptions = getDefaultOptions();
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const weekStartsOn =
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options?.weekStartsOn ??
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options?.locale?.options?.weekStartsOn ??
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defaultOptions.weekStartsOn ??
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defaultOptions.locale?.options?.weekStartsOn ??
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0;
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const _date = toDate(date);
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const day = _date.getDay();
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const diff = (day < weekStartsOn ? -7 : 0) + 6 - (day - weekStartsOn);
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_date.setHours(0, 0, 0, 0);
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_date.setDate(_date.getDate() + diff);
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return _date;
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}
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// Fallback for modularized imports:
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export default lastDayOfWeek;
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