/**
 * Reverses the elements of an array in place.
 *
 * This function takes an array and reverses its elements in place, modifying the original array.
 * If the input is `null` or `undefined`, it returns the input as is.
 *
 * @template T - The type of elements in the array.
 * @param {T[] | null | undefined} array - The array to reverse. If `null` or `undefined`, the input is returned as is.
 * @returns {T[] | null | undefined} The reversed array, or `null`/`undefined` if the input was `null`/`undefined`.
 *
 * @example
 * const array = [1, 2, 3, 4, 5];
 * const reversedArray = reverse(array);
 * // reversedArray is [5, 4, 3, 2, 1], and array is also modified to [5, 4, 3, 2, 1].
 *
 * const emptyArray = reverse([]);
 * // emptyArray is [].
 *
 * const nullArray = reverse(null);
 * // nullArray is null.
 */
declare function reverse<T>(array: T[] | null | undefined): T[] | null | undefined;

export { reverse };