The oidc-provider Provider class takes a configuration object for which several properties are callbacks that receive types such as Client and Interaction as parameters. While I do see these types in @types/oidc-provider, they're not exported preventing them from being used, forcing us use any in those callback signatures.

@panva maybe I'm missing something or using the type definitions incorrectly so feel free to correct me, but here's an example of what I mean: