39 lines
1.2 KiB
TypeScript
39 lines
1.2 KiB
TypeScript
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/**
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* @name compareDesc
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* @category Common Helpers
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* @summary Compare the two dates reverse chronologically and return -1, 0 or 1.
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*
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* @description
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* Compare the two dates and return -1 if the first date is after the second,
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* 1 if the first date is before the second or 0 if dates are equal.
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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 dateLeft - The first date to compare
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* @param dateRight - The second date to compare
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*
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* @returns The result of the comparison
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*
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* @example
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* // Compare 11 February 1987 and 10 July 1989 reverse chronologically:
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* const result = compareDesc(new Date(1987, 1, 11), new Date(1989, 6, 10))
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* //=> 1
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*
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* @example
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* // Sort the array of dates in reverse chronological order:
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* const result = [
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* new Date(1995, 6, 2),
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* new Date(1987, 1, 11),
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* new Date(1989, 6, 10)
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* ].sort(compareDesc)
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* //=> [
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* // Sun Jul 02 1995 00:00:00,
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* // Mon Jul 10 1989 00:00:00,
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* // Wed Feb 11 1987 00:00:00
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* // ]
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*/
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export declare function compareDesc<DateType extends Date>(
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dateLeft: DateType | number | string,
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dateRight: DateType | number | string,
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): number;
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