Node.js (Undici) fetch doesn't follow redirects when mocked with MSW

[islazh]

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

22.8.0

Reproduction repository

https://github.com/islazh/msw-redirection-bug-repro

Reproduction steps

Steps to reproduce

• run nvm use
• run corepack enable
• run pnpm install
• run pnpm test

Current behavior

The requests do not automatically "follow" the redirect and a 302 is returned in the response with Location header. The test fails as a result.

Expected behavior

The requests should "follow" the redirect and progress to /redirected. The response status should be 200 with whatever HTML is returned.

[kettanaito]

Hi, @islazh. Thanks for reporting this.

Could you please check how is your issue different from #2177? I know you are not using Axios, but I suspect the root cause for this behavior is the same. Thanks.

[kettanaito]

Closed in favor of mswjs/interceptors#626. Please follow the updates there.