[documentation] missing page config documentation

Bug report

Describe the bug

I know there is config export for pages and api routes. They are partially described in api-middlewares#custom-config or in amp-support for example.

I was searching for documentation on that config export but I couldn’t find it. Also: is a typescript type available for the config export?

To Reproduce

Look at the next.js docs and search for documetation on config export for pages or api routes

Expected behavior

There is no such documentation on the config export

[AmazingTurtle]

@vuki656 doubt it, the docs are part of this repo, see https://github.com/vercel/next.js/blob/canary/docs/basic-features/pages.md for example

[leerob]

@AmazingTurtle the config object changes depending on where you’re using it from (e.g. amp). There shouldn’t be a single place listing all the config objects, because you need the context of where you’re using that value.

As @lachlanjc, experimental values aren’t put into the documentation because they’re not stable. Once they’re stable, they will be added.

Thank you regardless! 👍