EntityManager is Undefined

[sgentile]

I setup per the documentation, but when this is called entitymanager is undefined:

save<T extends DeepPartial<Entity>>(entityOrEntities: T|T[], options?: SaveOptions): Promise<T|T[]> {
        return this.manager.save<T>(this.metadata.target as any, entityOrEntities as any, options);
    }

my index:

initializeTransactionalContext();
serve();

my respository:

@EntityRepository(User)
export class UserRepository extends BaseRepository<User> {}

my service injecting it

export class UserService {
    constructor(
        private readonly userRepository: UserRepository
    ) {}

lastly the call to save

return await this.userRepository.save(user);