msw/node unable to intercept requests from fetch in undici about msw HOT 3 OPEN

I have a hard requirement to import fetch directly from the undici package.

That shouldn't be a problem.

Also, the node built-in fetch does not allow passing a dispatcher directly, unlike fetch from undici.

TIL!

No worries, let's reopen this then.

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@kettanaito Thanks for looking into this.

I have removed the polyfills again in the minimal reproduction. They were a futile attempt to fix my issue but they never made sense. This bug purely revolves around a nodejs backend microservice, no jsdom environment is needed.

I have a hard requirement to import fetch directly from the undici package. This is because the node built-in version of fetch is from an older undici version. Since then, there have been bugs fixed in undici. Also, the node built-in fetch does not allow passing a dispatcher directly, unlike fetch from undici. Because of these reasons, I cannot use the global fetch.

Please reconsider this issue 🙏

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Hi, @TheHolyWaffle. Thanks for reporting this.

Please, compare your usage example to the Jest and Jest+JSDOM examples from MSW. Those are functional (as functional as anything on JSDOM can get).

You don't have to import fetch from undici explicitly if you have this line.

I also highly recommend to drop jest.polyfills.js and use jest-fixed-jsdom preset instead. Try that and let me know if you still encounter the issue.

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