69 lines
2.5 KiB
JavaScript
69 lines
2.5 KiB
JavaScript
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import { getRoundingMethod } from "./_lib/getRoundingMethod.mjs";
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import { constructFrom } from "./constructFrom.mjs";
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import { toDate } from "./toDate.mjs";
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/**
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* The {@link roundToNearestMinutes} function options.
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*/
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/**
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* @name roundToNearestMinutes
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* @category Minute Helpers
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* @summary Rounds the given date to the nearest minute
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*
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* @description
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* Rounds the given date to the nearest minute (or number of minutes).
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* Rounds up when the given date is exactly between the nearest round minutes.
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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 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 minute
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*
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* @example
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* // Round 10 July 2014 12:12:34 to nearest minute:
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* const result = roundToNearestMinutes(new Date(2014, 6, 10, 12, 12, 34))
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* //=> Thu Jul 10 2014 12:13:00
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*
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* @example
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* // Round 10 July 2014 12:12:34 to nearest quarter hour:
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* const result = roundToNearestMinutes(new Date(2014, 6, 10, 12, 12, 34), { nearestTo: 15 })
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* //=> Thu Jul 10 2014 12:15:00
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*
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* @example
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* // Floor (rounds down) 10 July 2014 12:12:34 to nearest minute:
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* const result = roundToNearestMinutes(new Date(2014, 6, 10, 12, 12, 34), { roundingMethod: 'floor' })
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* //=> Thu Jul 10 2014 12:12:00
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*
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* @example
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* // Ceil (rounds up) 10 July 2014 12:12:34 to nearest half hour:
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* const result = roundToNearestMinutes(new Date(2014, 6, 10, 12, 12, 34), { roundingMethod: 'ceil', nearestTo: 30 })
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* //=> Thu Jul 10 2014 12:30:00
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*/
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export function roundToNearestMinutes(date, options) {
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const nearestTo = options?.nearestTo ?? 1;
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if (nearestTo < 1 || nearestTo > 30) return constructFrom(date, NaN);
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const _date = toDate(date);
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const fractionalSeconds = _date.getSeconds() / 60;
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const fractionalMilliseconds = _date.getMilliseconds() / 1000 / 60;
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const minutes =
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_date.getMinutes() + fractionalSeconds + fractionalMilliseconds;
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// Unlike the `differenceIn*` functions, the default rounding behavior is `round` and not 'trunc'
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const method = options?.roundingMethod ?? "round";
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const roundingMethod = getRoundingMethod(method);
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const roundedMinutes = roundingMethod(minutes / nearestTo) * nearestTo;
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const result = constructFrom(date, _date);
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result.setMinutes(roundedMinutes, 0, 0);
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return result;
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}
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// Fallback for modularized imports:
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export default roundToNearestMinutes;
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