import type { array, matrix } from "../types";
/**
 * Returns the last index in an array or matrix.
 *
 * Returns the last index of an array or matrix. For matrices, you can specify the dimension: -1 for both rows and columns, 0 for rows, and 1 for columns.
 *
 * @param x Input array or matrix.
 * @param dim For matrix: -1 (both), 0 (rows), 1 (columns). Defaults to -1.
 * @returns Last index or indices.
 * @throws If no arguments are provided or if the dimension is invalid.
 *
 * @example Last index of a vector
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(end([5, 6, 3]), 2);
 *
 * ```
 *
 * @example Last indices of a matrix
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(end([[4, 5, 0], [-1, 2, -3]]), [1, 2]);
 *
 * ```
 *
 * @example Last row index of a matrix
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(end([[4, 5, 0], [-1, 2, -3]], 0), 1);
 *
 * ```
 *
 * @example Last column index of a matrix
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(end([[4, 5, 0], [-1, 2, -3]], 1), 2);
 *
 * ```
 *
 * @example Last index of a number (returns the number itself)
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(end(5), 5);
 *
 * ```
 */
export default function end(x: number | array | matrix, dim?: number): number | array;
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