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Module

std/streams/to_array_buffer.ts

The Deno Standard Library
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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
import { concat } from "../bytes/concat.ts";
/** * Converts a {@linkcode ReadableStream} of {@linkcode Uint8Array}s to an * {@linkcode ArrayBuffer}. Works the same as{@linkcode Response.arrayBuffer}. * * @example * ```ts * import { toArrayBuffer } from "https://deno.land/std@$STD_VERSION/streams/to_array_buffer.ts"; * * const stream = ReadableStream.from([ * new Uint8Array([1, 2]), * new Uint8Array([3, 4]), * ]); * await toArrayBuffer(stream); // ArrayBuffer { [Uint8Contents]: <01 02 03 04>, byteLength: 4 } * ``` */export async function toArrayBuffer( readableStream: ReadableStream<Uint8Array>,): Promise<ArrayBuffer> { const reader = readableStream.getReader(); const chunks: Uint8Array[] = [];
while (true) { const { done, value } = await reader.read();
if (done) { break; }
chunks.push(value); }
return concat(chunks).buffer;}