41 lines
1.2 KiB
JavaScript
41 lines
1.2 KiB
JavaScript
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import { startOfISOWeekYear } from "./startOfISOWeekYear.js";
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import { normalizeDates } from "./_lib/normalizeDates.js";
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/**
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* The {@link isSameISOWeekYear} function options.
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*/
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/**
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* @name isSameISOWeekYear
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* @category ISO Week-Numbering Year Helpers
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* @summary Are the given dates in the same ISO week-numbering year?
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*
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* @description
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* Are the given dates in the same ISO week-numbering year?
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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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* @param laterDate - The first date to check
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* @param earlierDate - The second date to check
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* @param options - An object with options
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*
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* @returns The dates are in the same ISO week-numbering year
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*
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* @example
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* // Are 29 December 2003 and 2 January 2005 in the same ISO week-numbering year?
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* const result = isSameISOWeekYear(new Date(2003, 11, 29), new Date(2005, 0, 2))
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* //=> true
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*/
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export function isSameISOWeekYear(laterDate, earlierDate, options) {
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const [laterDate_, earlierDate_] = normalizeDates(
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options?.in,
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laterDate,
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earlierDate,
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);
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return +startOfISOWeekYear(laterDate_) === +startOfISOWeekYear(earlierDate_);
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}
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// Fallback for modularized imports:
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export default isSameISOWeekYear;
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