How do I extend the default user object?

[italodeandra]

Hi team,

I'm currently in the need of extending the default user object, and I did it like this:

const MongoDBAdapterWrapper: typeof MongoDBAdapter = (options) => {
  const adapter = MongoDBAdapter(options);
  adapter.createUser = (user) => {
    user.type = UserType.NORMAL;
    return adapter.createUser(user);
  };
  return adapter;
};

Is there a better way for doing this or did I manage to do in a good way? For future "extensions" should I keep doing the same way?

[balazsorban44]

you don't need any of that.

For TS:

https://next-auth.js.org/getting-started/typescript

Further, the createUser forwards anything to your db automatically, that's returned in the profile callback of your provider

https://next-auth.js.org/adapters/models#user

[italodeandra]

I'm using the EmailProvider so there isn't a profile callback.

[joematune]

@italodeandra - I see what you mean - provider type = "email" doesn't have a profile callback to override. It's created here and it might be nice to add to the initial profile as it's currently just an email. i.e.

// If it is an existing user, use that, otherwise use a placeholder
const profile = (identifier
  ? await getUserByEmail(identifier)
  : null) ?? {
+ ...initialProfile,
  email: identifier,
}

@balazsorban44 Thanks for the comment. I'm using an oauth provider so passing in a profile callback in the provider options to override the default helped 🙌. Is the above snippet something worth looking into?