import type { ContextOptions, DateArg } from "./types.js";
/**
* The {@link endOfDecade} function options.
*/
export interface EndOfDecadeOptions<DateType extends Date = Date>
extends ContextOptions<DateType> {}
/**
* @name endOfDecade
* @category Decade Helpers
* @summary Return the end of a decade for the given date.
*
* @description
* Return the end of a decade for the given date.
*
* @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).
* @typeParam ResultDate - The result `Date` type, it is the type returned from the context function if it is passed, or inferred from the arguments.
*
* @param date - The original date
* @param options - An object with options
*
* @returns The end of a decade
*
* @example
* // The end of a decade for 12 May 1984 00:00:00:
* const result = endOfDecade(new Date(1984, 4, 12, 00, 00, 00))
* //=> Dec 31 1989 23:59:59.999
*/
export declare function endOfDecade<
DateType extends Date,
ResultDate extends Date = DateType,
>(
date: DateArg<DateType>,
options?: EndOfDecadeOptions<ResultDate> | undefined,
): ResultDate;