node v18.6.0. - TypeError: The "source" argument must be an instance of Response or an Promise resolving to Response. Received an instance of Response

[8bcb]

Version

v18.6.0

Platform

Darwin Asias-MacBook-Air.local 20.6.0 Darwin Kernel Version 20.6.0: Wed Jun 23 00:26:27 PDT 2021; root:xnu-7195.141.2~5/RELEASE_ARM64_T8101 arm64

Subsystem

No response

What steps will reproduce the bug?

Hey :)
I've upgraded node to 18.6.0 and started receiving following typescript error (I work on the latest typescript version 4.7.4:

TypeError: The "source" argument must be an instance of Response or an Promise resolving to Response. Received an instance of Response

Error occurs when calling wasm method:

await WebAssembly.compileStreaming(wasmResponse);

API:

function WebAssembly.compileStreaming(source: Response | PromiseLike<Response>): Promise<WebAssembly.Module>

This is how I generate the response:

function generateResponse(wasmBinary: Buffer): Response {
  const init = { status: 200, statusText: 'OK', headers: { 'Content-Type': 'application/wasm' } };
  return new Response(wasmBinary, init);
}

It was working fine under node v16.5.0. I assume it may have sth to do with undici providing default fetch to node?

How often does it reproduce? Is there a required condition?

No response

What is the expected behavior?

No response

What do you see instead?

TypeError: The "source" argument must be an instance of Response or an Promise resolving to Response. Received an instance of Response

Additional information

No response

[aduh95]

Does it result in an error in runtime? We don't maintain TypeScript types on this repo (yet? @nodejs/typescript), so unless you have a runtime error, we can't help you with the TS one.

[8bcb]

It seems to be a Jest problem, I updated it and it works just fine. Sorry for the trouble, closing the issue.