Feature modules in NestJS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the feature module into the root module.

NestJS

import { Module } from '@nestjs/common';
import { UsersModule } from './users/users.module';

@Module({
  imports: [[1]],
})
export class AppModule {}

Drag options to blanks, or click blank then click option'

AUsersModules

BUserModule

CusersModule

DUsersModule

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect casing like 'usersModule' or plural forms.

Misspelling the module name.

The feature module UsersModule must be imported exactly by its exported class name.

2fill in blank

medium

Complete the code to declare a controller inside a feature module.

NestJS

import { Module } from '@nestjs/common';
import { UsersController } from './users.controller';

@Module({
  controllers: [[1]],
})
export class UsersModule {}

Drag options to blanks, or click blank then click option'

AUsersController

BusersController

CUserController

DUsersControllers

Attempts:

3 left

💡 Hint

Common Mistakes

Using singular form 'UserController' when the file exports 'UsersController'.

Incorrect casing like 'usersController'.

The controller must be declared by its exact exported class name UsersController.

3fill in blank

hard

Fix the error in the feature module by completing the providers array.

NestJS

import { Module } from '@nestjs/common';
import { UsersService } from './users.service';

@Module({
  providers: [[1]],
})
export class UsersModule {}

Drag options to blanks, or click blank then click option'

AusersService

BUsersService

CUserService

DUsersServices

Attempts:

3 left

💡 Hint

Common Mistakes

Using singular 'UserService' when the service is named 'UsersService'.

Incorrect casing or pluralization.

The provider must be the exact exported class name UsersService to register the service correctly.

4fill in blank

hard

Fill both blanks to export the service and import the feature module correctly.

NestJS

import { Module } from '@nestjs/common';
import { UsersService } from './users.service';

@Module({
  providers: [[1]],
  exports: [[2]],
})
export class UsersModule {}

Drag options to blanks, or click blank then click option'

AUsersService

BUserService

CUsersModule

DUsersServices

Attempts:

3 left

💡 Hint

Common Mistakes

Exporting the module instead of the service.

Using incorrect service names or casing.

The service UsersService must be both provided and exported to be used in other modules.

5fill in blank

hard

Fill all three blanks to create a feature module with controller, service, and export the service.

NestJS

import { Module } from '@nestjs/common';
import { UsersController } from './users.controller';
import { UsersService } from './users.service';

@Module({
  controllers: [[1]],
  providers: [[2]],
  exports: [[3]],
})
export class UsersModule {}

Drag options to blanks, or click blank then click option'

AUsersController

BUsersService

DUserController

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up controller and service names.

Not exporting the service when needed.

The controller and service must be declared correctly, and the service exported for use in other modules.