import type { numarraymatrix } from "../types";
/**
 * Create a clone of the input array or matrix.
 *
 * Creates a deep copy of the input array or matrix. If the input is a number, it simply returns that number.
 *
 * @param x Array or matrix to clone.
 * @returns A deep copy of the input array or matrix.
 * @throws If no input is provided.
 *
 * @example Clone a matrix
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(clone([[-1, 3, -1], [4, 5, 9]]), [[-1, 3, -1], [4, 5, 9]]);
 *
 * ```
 *
 * @example Clone an array
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(clone([5, 6, 3]), [5, 6, 3]);
 *
 * ```
 *
 * @example Clone a single number
 * ```ts
 * import { assertEquals } from "jsr:@std/assert";
 *
 * assertEquals(clone(5), 5);
 *
 * ```
 */
export default function clone<T extends numarraymatrix>(x: T): T;
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