Marc Mintel
5397309103
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54 lines
1.5 KiB
Plaintext
54 lines
1.5 KiB
Plaintext
import type {
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ContextOptions,
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DateArg,
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FirstWeekContainsDateOptions,
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LocalizedOptions,
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WeekOptions,
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} from "./types.js";
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/**
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* The {@link getWeek} function options.
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*/
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export interface GetWeekOptions
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extends LocalizedOptions<"options">,
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WeekOptions,
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FirstWeekContainsDateOptions,
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ContextOptions<Date> {}
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/**
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* @name getWeek
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* @category Week Helpers
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* @summary Get the local week index of the given date.
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*
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* @description
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* Get the local week index of the given date.
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* The exact calculation depends on the values of
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* `options.weekStartsOn` (which is the index of the first day of the week)
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* and `options.firstWeekContainsDate` (which is the day of January, which is always in
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* the first week of the week-numbering year)
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*
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* Week numbering: https://en.wikipedia.org/wiki/Week#The_ISO_week_date_system
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*
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* @param date - The given date
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* @param options - An object with options
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*
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* @returns The week
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*
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* @example
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* // Which week of the local week numbering year is 2 January 2005 with default options?
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* const result = getWeek(new Date(2005, 0, 2))
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* //=> 2
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*
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* @example
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* // Which week of the local week numbering year is 2 January 2005,
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* // if Monday is the first day of the week,
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* // and the first week of the year always contains 4 January?
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* const result = getWeek(new Date(2005, 0, 2), {
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* weekStartsOn: 1,
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* firstWeekContainsDate: 4
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* })
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* //=> 53
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*/
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export declare function getWeek(
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date: DateArg<Date> & {},
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options?: GetWeekOptions | undefined,
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): number;
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