Type alias TilmeldBeforeRegisterCallback

TilmeldBeforeRegisterCallback: ((user, data) => Promise<void>)

Theses are run before the user data checks, so the only checks before are whether registration is allowed and whether the user is already registered.

Type declaration

- (user, data): Promise<void>
- Parameters
  - user: User & UserData
  - data: {
        additionalData?: {
            [k: string]: any;
        };
        password: string;
    }
    - Optional additionalData?: {
      [k: string]: any;
      }
      [k: string]: any
    - password: string
  Returns Promise<void>