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- import type { ContextOptions, DateArg, RoundingOptions } from "./types.js";
- /**
- * The {@link differenceInWeeks} function options.
- */
- export interface DifferenceInWeeksOptions
- extends RoundingOptions,
- ContextOptions<Date> {}
- /**
- * @name differenceInWeeks
- * @category Week Helpers
- * @summary Get the number of full weeks between the given dates.
- *
- * @description
- * Get the number of full weeks between two dates. Fractional weeks are
- * truncated towards zero by default.
- *
- * One "full week" is the distance between a local time in one day to the same
- * local time 7 days earlier or later. A full week can sometimes be less than
- * or more than 7*24 hours if a daylight savings change happens between two dates.
- *
- * To ignore DST and only measure exact 7*24-hour periods, use this instead:
- * `Math.trunc(differenceInHours(dateLeft, dateRight)/(7*24))|0`.
- *
- * @param laterDate - The later date
- * @param earlierDate - The earlier date
- * @param options - An object with options
- *
- * @returns The number of full weeks
- *
- * @example
- * // How many full weeks are between 5 July 2014 and 20 July 2014?
- * const result = differenceInWeeks(new Date(2014, 6, 20), new Date(2014, 6, 5))
- * //=> 2
- *
- * @example
- * // How many full weeks are between
- * // 1 March 2020 0:00 and 6 June 2020 0:00 ?
- * // Note: because local time is used, the
- * // result will always be 8 weeks (54 days),
- * // even if DST starts and the period has
- * // only 54*24-1 hours.
- * const result = differenceInWeeks(
- * new Date(2020, 5, 1),
- * new Date(2020, 2, 6)
- * )
- * //=> 8
- */
- export declare function differenceInWeeks(
- laterDate: DateArg<Date> & {},
- earlierDate: DateArg<Date> & {},
- options?: DifferenceInWeeksOptions | undefined,
- ): number;
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