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request.formData() fails with vitest and file #2166
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Hi, @haakonph. Thanks for reporting this. I will take a look once I have a minute but generally we have a stance that Jest issues are not addressed. If I am able to reproduce this in raw Node.js or with Vitest, then I will consider this a bug. If this is only reproducible for Jest/JSDOM, I will close this as wont-fix. |
@haakonph I ran into this today, too, but was able to solve it with the polyfill instructions. In case it helps, my
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@kettanaito Hi, sorry i was a bit to fast with my copy pasting. The issue is with vitest and when the body contains a file. I oppdated the issue. I am not able to reproduce it without vitest. |
We are also running into this issue with msw, we are also running in an environment that loads jsdom, so this might be an interplay between msw, jsdom and a newer undici version? Any Node.js version after As a workaround we are currently pinned to Node.js |
Same problem here. Node v20.14.0, msw 2.3.1, vitest. Downgraded node to 20.12.2, and now it works again. |
I had the same problem Node v20.15.1, msw 2.3.2, vitest 2.0.4. Downgraded node to 20.12.2 for now to solve |
Prerequisites
Environment check
msw
versionNode.js version
v22.2.0
Reproduction repository
https://github.com/haakonph/msw-examples
Reproduction steps
alter the example to use a request with a file: (as in the example repo)
in the with-vitest exmple,
run npm i
and run the 'fetches the user info' test
you need to add a file to the request to get it to fail
if you run with npm v20.0.0 it works with jsdom but not without.
it works with jest-jsdom.
Current behavior
with vitest-jsdom it time out waiting to get the request
with vitest without vitestjsdom you get a 500 response.
Expected behavior
get a 200 response as you get with examples/with-jest-jsdom example
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