Root module (AppModule) in NestJS - Mini Project: Build & Apply

Create a Root Module (AppModule) in NestJS

📖 Scenario: You are building a simple NestJS application. Every NestJS app needs a root module called AppModule. This module organizes your app and tells NestJS what to start with.

🎯 Goal: Create a basic root module named AppModule using NestJS decorators and export it properly.

📋 What You'll Learn

Create a class named AppModule

Use the @Module decorator from @nestjs/common

Include an empty imports array in the decorator

Export the AppModule class as default export

💡 Why This Matters

🌍 Real World

Every NestJS application needs a root module to organize and start the app.

💼 Career

Understanding how to create and configure the root module is essential for backend developers working with NestJS.

1

Import Module decorator from @nestjs/common

Write an import statement to import Module from @nestjs/common.

NestJS

# Your code here

Need a hint?

Use import { Module } from '@nestjs/common'; to bring in the decorator.

2

Create an empty AppModule class with @Module decorator

Create a class named AppModule and decorate it with @Module that has an empty imports array.

NestJS

import { Module } from '@nestjs/common';

# Your code here

Need a hint?

Use @Module({ imports: [] }) above the class AppModule.

3

Export AppModule as default export

Change the export of AppModule to be the default export using export default AppModule;.

NestJS

import { Module } from '@nestjs/common';

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

# Your code here

Need a hint?

Use export default AppModule; after the class definition.

4

Final check: Ensure the root module is properly structured

Make sure the file has the import of Module, the @Module decorator with empty imports, the AppModule class, and the default export of AppModule.

NestJS

import { Module } from '@nestjs/common';

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

export default AppModule;

# Review your code to confirm all parts are present

Need a hint?

Check that all parts are included exactly as instructed.