38 lines
1.3 KiB
JavaScript
38 lines
1.3 KiB
JavaScript
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import { max } from "./max.mjs";
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import { min } from "./min.mjs";
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/**
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* @name clamp
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* @category Interval Helpers
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* @summary Return a date bounded by the start and the end of the given interval
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*
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* @description
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* Clamps a date to the lower bound with the start of the interval and the upper
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* bound with the end of the interval.
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*
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* - When the date is less than the start of the interval, the start is returned.
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* - When the date is greater than the end of the interval, the end is returned.
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* - Otherwise the date is returned.
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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 be bounded
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* @param interval - The interval to bound to
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*
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* @returns The date bounded by the start and the end of the interval
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*
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* @example
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* // What is Mar, 21, 2021 bounded to an interval starting at Mar, 22, 2021 and ending at Apr, 01, 2021
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* const result = clamp(new Date(2021, 2, 21), {
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* start: new Date(2021, 2, 22),
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* end: new Date(2021, 3, 1),
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* })
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* //=> Mon Mar 22 2021 00:00:00
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*/
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export function clamp(date, interval) {
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return min([max([date, interval.start]), interval.end]);
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}
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// Fallback for modularized imports:
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export default clamp;
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