Providing Providers to Dynamic NestJS Modules

How Can I use

export const { ConfigurableModuleClass, MODULE_OPTIONS_TOKEN } =
   new ConfigurableModuleBuilder<ConfigModuleOptions>()
  .setFactoryMethodName('createConfigOptions').build();

to provide multiple providers to a dynamic module?

I read this article Providing Providers to Dynamic NestJS Modules. It is just using a thirty party library. I believe since it was published two years ago the ConfigurableModuleBuilder can achieve this same use case.

So How can I divide the options passed into registerAsync into several providers?

    AuthModule.registerAsync({
      imports: [UserModule],
      inject: [UserService, ConfigService],
      useFactory: (userService: UserService, configService: ConfigService) => ({
        userService: userService,
        configService
      }),
    }),

So, for the code snnipet above how can I do the below?

    @Inject(USER_SERVICE) private userService: IUserService,
    @Inject(CONFIG_SERVICE) private configService: IConfigService,

Module Definition file

export const {
  ConfigurableModuleClass,
  MODULE_OPTIONS_TOKEN,
  OPTIONS_TYPE,
  ASYNC_OPTIONS_TYPE,
} = new ConfigurableModuleBuilder<AuthModuleOptions>().build();

Solution

What can be done here is you can make the AuthModule have a @Module() decorator that looks like the following:

@Module({
  providers: [
    {
      provide: USER_SERVICE,
      inject: [MODULE_OPTIONS_TOKEN],
      useFactory: (options: AuthModuleOptions) => options.userService
    },
    {
      provide: CONFIG_SERVICE,
      inject: [MODULE_OPTIONS_TOKEN],
      useFactory: (options: AuthModuleOptions) => options.configService,
    }
  ],
})
export class AuthModules extends ConfigurableModuleClass {}

Do note that doing this will allow other services within the AuthModule to inject the userServicevia @Inject(USER_SERVICE), but it also means that AuthModule will not be usable without using the forRoot/forRootAsync methods.

I have a working example with my OgmaModule here