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std/bytes/concat.ts

Deno standard library
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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
/** Concatenate the given arrays into a new Uint8Array. * * ```ts * import { concat } from "https://deno.land/std@$STD_VERSION/bytes/concat.ts"; * const a = new Uint8Array([0, 1, 2]); * const b = new Uint8Array([3, 4, 5]); * console.log(concat(a, b)); // [0, 1, 2, 3, 4, 5] */export function concat(...buf: Uint8Array[]): Uint8Array { let length = 0; for (const b of buf) { length += b.length; }
const output = new Uint8Array(length); let index = 0; for (const b of buf) { output.set(b, index); index += b.length; }
return output;}