Marc Mintel
5397309103
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77 lines
2.8 KiB
Plaintext
77 lines
2.8 KiB
Plaintext
"use strict";
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exports.roundToNearestHours = roundToNearestHours;
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var _index = require("./_lib/getRoundingMethod.cjs");
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var _index2 = require("./constructFrom.cjs");
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var _index3 = require("./toDate.cjs");
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/**
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* The {@link roundToNearestHours} function options.
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*/
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/**
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* @name roundToNearestHours
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* @category Hour Helpers
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* @summary Rounds the given date to the nearest hour
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*
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* @description
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* Rounds the given date to the nearest hour (or number of hours).
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* Rounds up when the given date is exactly between the nearest round hours.
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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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* @typeParam ResultDate - The result `Date` type, it is the type returned from the context function if it is passed, or inferred from the arguments.
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*
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* @param date - The date to round
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* @param options - An object with options.
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*
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* @returns The new date rounded to the closest hour
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*
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* @example
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* // Round 10 July 2014 12:34:56 to nearest hour:
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* const result = roundToNearestHours(new Date(2014, 6, 10, 12, 34, 56))
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* //=> Thu Jul 10 2014 13:00:00
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*
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* @example
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* // Round 10 July 2014 12:34:56 to nearest half hour:
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* const result = roundToNearestHours(new Date(2014, 6, 10, 12, 34, 56), { nearestTo: 6 })
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* //=> Thu Jul 10 2014 12:00:00
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*
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* @example
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* // Round 10 July 2014 12:34:56 to nearest half hour:
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* const result = roundToNearestHours(new Date(2014, 6, 10, 12, 34, 56), { nearestTo: 8 })
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* //=> Thu Jul 10 2014 16:00:00
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*
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* @example
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* // Floor (rounds down) 10 July 2014 12:34:56 to nearest hour:
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* const result = roundToNearestHours(new Date(2014, 6, 10, 1, 23, 45), { roundingMethod: 'ceil' })
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* //=> Thu Jul 10 2014 02:00:00
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*
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* @example
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* // Ceil (rounds up) 10 July 2014 12:34:56 to nearest quarter hour:
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* const result = roundToNearestHours(new Date(2014, 6, 10, 12, 34, 56), { roundingMethod: 'floor', nearestTo: 8 })
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* //=> Thu Jul 10 2014 08:00:00
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*/
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function roundToNearestHours(date, options) {
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const nearestTo = options?.nearestTo ?? 1;
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if (nearestTo < 1 || nearestTo > 12)
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return (0, _index2.constructFrom)(options?.in || date, NaN);
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const date_ = (0, _index3.toDate)(date, options?.in);
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const fractionalMinutes = date_.getMinutes() / 60;
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const fractionalSeconds = date_.getSeconds() / 60 / 60;
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const fractionalMilliseconds = date_.getMilliseconds() / 1000 / 60 / 60;
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const hours =
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date_.getHours() +
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fractionalMinutes +
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fractionalSeconds +
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fractionalMilliseconds;
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const method = options?.roundingMethod ?? "round";
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const roundingMethod = (0, _index.getRoundingMethod)(method);
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const roundedHours = roundingMethod(hours / nearestTo) * nearestTo;
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date_.setHours(roundedHours, 0, 0, 0);
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return date_;
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}
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