Uploads no longer working, I'm not sure what i've changed

[haswalt]

Been using URQL for a little while, recently we implemented the newer auth and retry exchanges but now uploads don't seem to work.

I'm using go (gqlgen) on my server side which means I see this error: [GraphQL] map[string]interface {} is not an Upload.

I did a little test on my client side to see what extractFiles sees (I'm using ReactNative) and I can see there are indeed files picked up. However It doesn't look like the multipart fetch exchange isn't sending over form data any more so my server only sees application/json, therefore not recognising an Upload.

I've also been tracking the network requests from my client and can see that the data is sent as application/json but from memory this should be sent as multipart/form-data.

anyone else come up against this?

** I don't have any cache enabled, only a small set of exchanges:

const exchanges = [dedupExchange,  errorExchange(...), retryExchange(...), authExchange(...),multipartFetchExchange]