Docs: getServerSideProps redirect object missing basePath

[offgriddev]

What is the improvement or update you wish to see?

All of the properties of the server-side redirects should be explained. Currently, the documentation only states that there are { destination: string, permanent: boolean } when it speaks of the shape of the object.

However, upon digging, I discovered that there is a basePath property when the server processes redirects here, unless I'm wrong in my reading of your code. If this is true though, that the redirect object in getServerSideProps has a basePath, could we please get the documentation updated to reflect this? It would be nice to see a breakdown of the properties with any additional context like we do in the next.config docs: https://nextjs.org/docs/api-reference/next.config.js/redirects

Is there any context that might help us understand?

When working on PR #352 in the gladly-team/next-firebase-auth repo, I was asked a question from the maintainer about support for SSR redirects for destinations that are outside the base path of the app. He mentioned that the documentation in the area isn't clear, so I dug into the next repo and discovered the actual behavior is through an undocumented basePath property: 59f7676/packages/next/server/base-server.ts#L1899

Does the docs page already exist? Please link to it.

https://nextjs.org/docs/basic-features/data-fetching#getserversideprops-server-side-rendering

[balazsorban44]

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