Marc Mintel
5397309103
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34 lines
1.0 KiB
Plaintext
34 lines
1.0 KiB
Plaintext
import { toDate } from "./toDate.mjs";
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/**
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* @name startOfQuarter
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* @category Quarter Helpers
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* @summary Return the start of a year quarter for the given date.
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*
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* @description
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* Return the start of a year quarter for the given date.
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* The result will be in the local timezone.
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*
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* @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
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*
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* @param date - The original date
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*
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* @returns The start of a quarter
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*
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* @example
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* // The start of a quarter for 2 September 2014 11:55:00:
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* const result = startOfQuarter(new Date(2014, 8, 2, 11, 55, 0))
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* //=> Tue Jul 01 2014 00:00:00
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*/
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export function startOfQuarter(date) {
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const _date = toDate(date);
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const currentMonth = _date.getMonth();
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const month = currentMonth - (currentMonth % 3);
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_date.setMonth(month, 1);
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_date.setHours(0, 0, 0, 0);
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return _date;
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}
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// Fallback for modularized imports:
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export default startOfQuarter;
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