With the consolidated types change in 2.2.7, certain types are no longer available.
While I understand these may be considered "internal" types, they are really helpful when utilizing a custom base query.

I would ask for your consideration in exposing at minimum the following:

@reduxjs/toolkit/dist/query/baseQueryTypes

• BaseQueryError
• BaseQueryMeta

@reduxjs/toolkit/dist/query/endpointDefinitions

• MutationExtraOptions
• QueryExtraOptions
• ResultDescription

As a workaround, it looks like these are available in the src directory.