| 1 | import type { ContextOptions, DateArg } from "./types.js";
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| 2 | /**
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| 3 | * The {@link differenceInCalendarISOWeekYears} function options.
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| 4 | */
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| 5 | export interface DifferenceInCalendarISOWeekYearsOptions
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| 6 | extends ContextOptions<Date> {}
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| 7 | /**
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| 8 | * @name differenceInCalendarISOWeekYears
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| 9 | * @category ISO Week-Numbering Year Helpers
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| 10 | * @summary Get the number of calendar ISO week-numbering years between the given dates.
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| 11 | *
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| 12 | * @description
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| 13 | * Get the number of calendar ISO week-numbering years between the given dates.
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| 14 | *
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| 15 | * ISO week-numbering year: http://en.wikipedia.org/wiki/ISO_week_date
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| 16 | *
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| 17 | * @param laterDate - The later date
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| 18 | * @param earlierDate - The earlier date
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| 19 | * @param options - An object with options
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| 20 | *
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| 21 | * @returns The number of calendar ISO week-numbering years
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| 22 | *
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| 23 | * @example
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| 24 | * // How many calendar ISO week-numbering years are 1 January 2010 and 1 January 2012?
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| 25 | * const result = differenceInCalendarISOWeekYears(
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| 26 | * new Date(2012, 0, 1),
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| 27 | * new Date(2010, 0, 1)
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| 28 | * )
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| 29 | * //=> 2
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| 30 | */
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| 31 | export declare function differenceInCalendarISOWeekYears(
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| 32 | laterDate: DateArg<Date> & {},
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| 33 | earlierDate: DateArg<Date> & {},
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| 34 | options?: DifferenceInCalendarISOWeekYearsOptions | undefined,
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| 35 | ): number;
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