feat(openapi-fetch): add transform options for response data handling

[Newbie012]

Changes

This PR adds the option to transform the response data. This is useful when you want to deserialize the returned output. This is not achievable via middleware.

How to Review

I would personally start from reading the test. The PR is quite minimal.

Checklist

• Unit tests updated
• docs/ updated (if necessary)
• pnpm run update:examples run (only applicable for openapi-typescript)

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🦋 Changeset detected

Latest commit: 9321c34

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
openapi-fetch	Patch
openapi-react-query	Patch
swr-openapi	Patch

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[drwpow]

Thanks for submitting! The “this is not achievable in middleware” callout is a great observation, and would also like to fix. Thank you for the proposal!

But since this is a bigger change, I’d like to pause on this and back up to a proposal first. Please Open an issue that has a more in-depth proposal for how you’d like to fix this flaw in middleware, and discuss some tradeoffs.

Adding another API that is 90% similar to what the middleware is doing now, but with some minor differences, isn’t a cohesive API design because it gives users multiple ways to accomplish the same goals.

Instead, I’d love to see a proposal that goes more in depth on:

• How is the current middleware API sufficient?
• What serialization/deserialization is needed?
• What are some alternatives—how might the middleware API be modified to accomplish these goals?

Thinking through this more holistically will benefit more users, and end up as a stronger design. To that end, would love to align more on the plan so we fix the real problems you’re pointing out, but in a way that improves everyones’ experience.