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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
/** * Splits the given array into chunks of the given size and returns them. * * @example * ```ts * import { chunk } from "https://deno.land/std@$STD_VERSION/collections/chunk.ts"; * import { assertEquals } from "https://deno.land/std@$STD_VERSION/testing/asserts.ts"; * * const words = [ *   "lorem", *   "ipsum", *   "dolor", *   "sit", *   "amet", *   "consetetur", *   "sadipscing", * ]; * const chunks = chunk(words, 3); * * assertEquals( *   chunks, *   [ *     ["lorem", "ipsum", "dolor"], *     ["sit", "amet", "consetetur"], *     ["sadipscing"], *   ], * ); * ``` */export function chunk<T>(array: readonly T[], size: number): T[][] {  if (size <= 0 || !Number.isInteger(size)) {    throw new Error(      `Expected size to be an integer greater than 0 but found ${size}`,    );  }
  if (array.length === 0) {    return [];  }
  const ret = Array.from<T[]>({ length: Math.ceil(array.length / size) });  let readIndex = 0;  let writeIndex = 0;
  while (readIndex < array.length) {    ret[writeIndex] = array.slice(readIndex, readIndex + size);
    writeIndex += 1;    readIndex += size;  }
  return ret;}