import type { ContextOptions, DateArg } from "./types.ts";
/**
 * The {@link addDays} function options.
 */
export interface AddDaysOptions<DateType extends Date = Date>
  extends ContextOptions<DateType> {}
/**
 * @name addDays
 * @category Day Helpers
 * @summary Add the specified number of days to the given date.
 *
 * @description
 * Add the specified number of days to the given date.
 *
 * **You don't need date-fns\***:
 *
 * Temporal has a built-in `add` method on all its classes:
 *
 * - [`Temporal.Instant.prototype.add()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Temporal/Instant/add)
 * - [`Temporal.PlainDate.prototype.add()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Temporal/PlainDate/add)
 * - [`Temporal.PlainDateTime.prototype.add()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Temporal/PlainDateTime/add)
 * - [`Temporal.PlainTime.prototype.add()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Temporal/PlainTime/add)
 * - [`Temporal.PlainYearMonth.prototype.add()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Temporal/PlainYearMonth/add)
 * - [`Temporal.ZonedDateTime.prototype.add()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Temporal/ZonedDateTime/add)
 *
 * \* **Not really**, see: https://date-fns.org/you-dont-need-date-fns
 *
 * @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 date to be changed
 * @param amount - The amount of days to be added.
 * @param options - An object with options
 *
 * @returns The new date with the days added
 *
 * @example
 * // Add 10 days to 1 September 2014:
 * const result = addDays(new Date(2014, 8, 1), 10)
 * //=> Thu Sep 11 2014 00:00:00
 *
 * @example
 * // Using Temporal:
 * // Add 10 days to 1 September 2014:
 * Temporal.PlainDate.from("2014-09-01").add({ days: 10 }).toString();
 * //=> "2014-09-11"
 */
export declare function addDays<
  DateType extends Date,
  ResultDate extends Date = DateType,
>(
  date: DateArg<DateType>,
  amount: number,
  options?: AddDaysOptions<ResultDate> | undefined,
): ResultDate;
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