ReadableStreamBYOBReader read() throws when given DataView #40612
Description
Version
v17.0.1
Platform
Darwin MrBBots-MBP 19.6.0 Darwin Kernel Version 19.6.0: Thu May 6 00:48:39 PDT 2021; root:xnu-6153.141.33~1/RELEASE_X86_64 x86_64
Subsystem
stream
What steps will reproduce the bug?
Running node byob.mjs with:
// byob.mjs import { ReadableStream } from "stream/web"; const stream = new ReadableStream({ type: "bytes", start(controller) { controller.enqueue(new Uint8Array([1, 2, 3])); controller.close(); }, }); const buffer = new ArrayBuffer(1024); const reader = stream.getReader({ mode: "byob" }); const result = await reader.read(new DataView(buffer)); console.log(result);...throws the following:
node:internal/webstreams/readablestream:1492 return new ctor(transferredBuffer, byteOffset, bytesFilled / elementSize); ^ TypeError: ctor is not a constructor at readableByteStreamControllerConvertPullIntoDescriptor (node:internal/webstreams/readablestream:1492:10) at readableByteStreamControllerPullInto (node:internal/webstreams/readablestream:2145:9) at readableStreamBYOBReaderRead (node:internal/webstreams/readablestream:1717:3) at ReadableStreamBYOBReader.read (node:internal/webstreams/readablestream:881:5) at file:///.../byob.mjs:15:29 at ModuleJob.run (node:internal/modules/esm/module_job:185:25) at async Promise.all (index 0) at async ESMLoader.import (node:internal/modules/esm/loader:281:24) at async loadESM (node:internal/process/esm_loader:88:5) at async handleMainPromise (node:internal/modules/run_main:65:12) Replacing new DataView with new Uint8Array returns the expected output:
{ value: Uint8Array(3) [ 1, 2, 3 ], done: false } How often does it reproduce? Is there a required condition?
No required condition, throws every time
What is the expected behavior?
Running the code in the latest Chrome (without the import) produces the following expected output:
{ value: DataView(3), done: false } What do you see instead?
See the stack trace above
Additional information
No response