31 lines
1.1 KiB
TypeScript
31 lines
1.1 KiB
TypeScript
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/**
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* @name closestIndexTo
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* @category Common Helpers
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* @summary Return an index of the closest date from the array comparing to the given date.
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*
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* @description
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* Return an index of the closest date from the array comparing to the given date.
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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 dateToCompare - The date to compare with
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* @param dates - The array to search
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*
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* @returns An index of the date closest to the given date or undefined if no valid value is given
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*
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* @example
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* // Which date is closer to 6 September 2015?
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* const dateToCompare = new Date(2015, 8, 6)
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* const datesArray = [
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* new Date(2015, 0, 1),
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* new Date(2016, 0, 1),
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* new Date(2017, 0, 1)
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* ]
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* const result = closestIndexTo(dateToCompare, datesArray)
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* //=> 1
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*/
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export declare function closestIndexTo<DateType extends Date>(
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dateToCompare: DateType | number | string,
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dates: Array<DateType | number | string>,
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): number | undefined;
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