urql file upload in expo crashes app

[seanlennaerts]

Describe the bug

I have a graphql server that has an image upload mutation that follows the graphql-multipart-request spec. On the client side I have a simple expo (api 52) project with urql. All queries and mutations work as expected. As soon as I execute a mutation with a File in the variables the entire app crashes. There are no logs, no entries in the network tab inside devtools, and the server never receives the request.

I also stepped through with the debugger and urql's serializeBody function that creates the FormData looks fine to me. It's still not clear what causes the app to crash.

Hoping that posting this here will shed some light on what is going on.

Reproduction

https://github.com/seanlennaerts/urql-expo-upload-image

Urql version

urql 4.2.1

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