"use strict";
exports.endOfDecade = endOfDecade;
var _index = require("./toDate.cjs");

var _index2 = require("./_core/getFullYear.cjs");
var _index3 = require("./_core/setFullYear.cjs");

/**
 * The {@link endOfDecade} function options.
 */

/**
 * @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
 */
function endOfDecade(date, options) {
  // TODO: Switch to more technical definition in of decades that start with 1
  // end with 0. I.e. 2001-2010 instead of current 2000-2009. It's a breaking
  // change, so it can only be done in 4.0.
  const _date = (0, _index.toDate)(date, options?.in);
  const year = (0, _index2.getFullYear)(_date);
  const decade = 9 + Math.floor(year / 10) * 10;
  (0, _index3.setFullYear)(_date, decade + 1, 0, 0);
  _date.setHours(23, 59, 59, 999);
  return _date;
}