Creating Reusable Angular Modules

Introduction

In Angular, creating reusable modules is essential for maintaining clean and manageable code. This lesson will cover what modules are, how to create them, and best practices for modular design.

What is a Module?

An Angular module is a cohesive block of code dedicated to an application domain, a workflow, or a closely related set of capabilities. Modules help in organizing an application into cohesive blocks of functionality.

Creating a Module

To create a reusable Angular module, follow these steps:

1. Generate a new module using Angular CLI:

ng generate module shared

2. Define the module:

import { NgModule } from '@angular/core';

import { CommonModule } from '@angular/common';

@NgModule({
  declarations: [],
  imports: [CommonModule],
  exports: []
})
export class SharedModule {}

3. Export components, directives, or pipes that should be available to other modules:

exports: [MyComponent, MyDirective]

4. Import the module in other modules as required:

import { SharedModule } from './shared/shared.module';

Best Practices

• Keep modules small and focused on a single responsibility.
• Use a naming convention that reflects the module's purpose, e.g., SharedModule, CoreModule.
• Follow the Angular style guide for organizing files and folders.
• Document your modules and their purpose for better maintainability.

FAQ