intercepted request won't abort on node 20 w/ [email protected]

[gerbyzation]

Prerequisites

• I confirm my issue is not in the opened issues
• I confirm the Frequently Asked Questions didn't contain the answer to my issue

Environment check

• I'm using the latest msw version
• I'm using Node.js version 18 or higher

Node.js version

v20.6.1

Reproduction repository

https://github.com/gerbyzation/msw-node20-undici-fetch-abort-repro

Reproduction steps

Setup:

git clone https://github.com/gerbyzation/msw-node20-undici-fetch-abort-repro
cd msw-node20-undici-fetch-abort-repro
pnpm i

To demonstrate the abort doesn't work with an MSW handler, but does work without run the two scripts below:

node not-working-abort.mjs
node working-abort.mjs

Current behavior

Request completes without throwing an abort error

Expected behavior

fetch should throw an abort error