Marc Mintel
5397309103
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36 lines
922 B
Plaintext
36 lines
922 B
Plaintext
"use strict";
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exports.getDecade = getDecade;
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var _index = require("./toDate.cjs");
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/**
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* The {@link getDecade} function options.
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*/
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/**
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* @name getDecade
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* @category Decade Helpers
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* @summary Get the decade of the given date.
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*
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* @description
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* Get the decade of the given date.
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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 year of decade
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*
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* @example
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* // Which decade belongs 27 November 1942?
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* const result = getDecade(new Date(1942, 10, 27))
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* //=> 1940
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*/
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function getDecade(date, options) {
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// TODO: Switch to more technical definition in of decades that start with 1
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// end with 0. I.e. 2001-2010 instead of current 2000-2009. It's a breaking
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// change, so it can only be done in 4.0.
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const _date = (0, _index.toDate)(date, options?.in);
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const year = _date.getFullYear();
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const decade = Math.floor(year / 10) * 10;
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return decade;
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}
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