authentication

Question 💬

It seems that the error messages are not typed. If we could have typed errors, it could further improve customizations.

According to what I found here: https://github.com/nextauthjs/next-auth/blob/82447f8e3ebc7004cf91121725b4f5970d2276d8/src/core/pages/signin.tsx#L42

An example I can think of is:

export type ErrorType = 
  'SignIn' | 
  'OAuthSignin'
``

There was an error where someone was trying to sign up using the thirdparty recipe and postgres rejected the query cause of value too long for type character varying(128) - and in the thidparty table, only the third_party_user_id column has 128 chars limit.

Error log reference:

[https://app.zenhub.com/files/231921809/8968d6d6-bcdd-48d8-aa60-fd556e934acd/download](https://app.zenhub.com/files

Is your feature request related to a problem? Please describe.

The public key-based request signing functionality added to sso_proxy in buzzfeed/sso#106 is undocumented. In particular, it's not immediately obvious how to a) generate an appropriate keypair or b) validate a signed request in an upstream service.

Describe the solution you'd like

New documenta