declare namespace Type {
    namespace Account {
        namespace AccountService {
            export type AccountId = GUID
            interface AccountDefinition<TProp = any, TRole = string> {
                id: string
                name: string
                displayName: string
                role?: TRole
                props?: TProp
            }
            type Account = AccountDefinition<any, string>
        }
        namespace AuthenticationService {
            export type Settings = {
                authentication?: {
                    ttl?: number
                }
            }
            export interface AuthenticationData<TType extends string = string, TMeta = any> {
                // We use uuid to identify unique authentication
                // suggest using hash of the unique criteria from TMeta
                guid?: string
                accountId?: string
                createdAt?: number
                active?: boolean
                type: TType
                meta: TMeta
            }
            export type CommonAuthenticationData = AuthenticationData<"common", {
                name: string
                displayName: string
                email: string
                password?: string
                passwordHash?: string
                active: boolean
            }>
        }
    }
}