Marc Mintel
5397309103
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42 lines
1.4 KiB
Plaintext
42 lines
1.4 KiB
Plaintext
import { addDays } from "./addDays.js";
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import { getISODay } from "./getISODay.js";
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import { toDate } from "./toDate.js";
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/**
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* The {@link setISODay} function options.
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*/
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/**
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* @name setISODay
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* @category Weekday Helpers
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* @summary Set the day of the ISO week to the given date.
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*
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* @description
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* Set the day of the ISO week to the given date.
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* ISO week starts with Monday.
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* 7 is the index of Sunday, 1 is the index of Monday, etc.
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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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* @typeParam ResultDate - The result `Date` type, it is the type returned from the context function if it is passed, or inferred from the arguments.
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*
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* @param date - The date to be changed
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* @param day - The day of the ISO week of the new date
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* @param options - An object with options
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*
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* @returns The new date with the day of the ISO week set
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*
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* @example
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* // Set Sunday to 1 September 2014:
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* const result = setISODay(new Date(2014, 8, 1), 7)
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* //=> Sun Sep 07 2014 00:00:00
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*/
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export function setISODay(date, day, options) {
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const date_ = toDate(date, options?.in);
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const currentDay = getISODay(date_, options);
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const diff = day - currentDay;
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return addDays(date_, diff, options);
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}
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// Fallback for modularized imports:
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export default setISODay;
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