40 lines
1.5 KiB
TypeScript
40 lines
1.5 KiB
TypeScript
import type { ContextOptions, DateArg } from "./types.js";
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/**
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* The {@link setISOWeekYear} function options.
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*/
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export interface SetISOWeekYearOptions<DateType extends Date = Date>
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extends ContextOptions<DateType> {}
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/**
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* @name setISOWeekYear
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* @category ISO Week-Numbering Year Helpers
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* @summary Set the ISO week-numbering year to the given date.
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*
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* @description
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* Set the ISO week-numbering year to the given date,
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* saving the week number and the weekday number.
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*
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* ISO week-numbering year: http://en.wikipedia.org/wiki/ISO_week_date
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*
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* @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows using 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 weekYear - The ISO week-numbering year 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 ISO week-numbering year set
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*
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* @example
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* // Set ISO week-numbering year 2007 to 29 December 2008:
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* const result = setISOWeekYear(new Date(2008, 11, 29), 2007)
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* //=> Mon Jan 01 2007 00:00:00
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*/
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export declare function setISOWeekYear<
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DateType extends Date,
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ResultDate extends Date = DateType,
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>(
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date: DateArg<DateType>,
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weekYear: number,
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options?: SetISOWeekYearOptions<ResultDate> | undefined,
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): ResultDate;
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