Introduction
Let’s dive into an Angular project structure crafted for seamless scalability. This setup, rooted in Domain-Driven Design (DDD) principles, paves the way for micro-frontends and module federation down the line. Learn how to arrange your Angular app for better modularity and maintainability, whether you’re juggling a monorepo or shifting to a polyrepo. This way, your project is geared up to grow along with your needs.
Project Structure
This structure is domain-focused, ensuring modularity and easy navigation.
my-angular-app/
|-- src/
| |-- domains/
| | |-- core/
| | | |-- utils/
| | | |-- auth/
| | | |-- ui/
| | | |-- core-module.ts
| | |-- shared/
| | | |-- components/
| | | |-- services/
| | | |-- shared-module.ts
| | |-- finance-domain/
| | | |-- features/
| | | | |-- income-feature/
| | | | | |-- pages/
| | | | | | |-- summary-page/
| | | | | | |-- detailed-page/
| | | | | |-- components/
| | | | | |-- services/
| | | | |-- expense-feature/
| | | | | |-- pages/
| | | | | | |-- summary-page/
| | | | | | |-- detailed-page/
| | | | | |-- components/
| | | | | |-- services/
| | | |-- shared/
| | | | |-- components/
| | | | |-- services/
| | | |-- finance-module.ts
| | |-- customer-management-domain/
| | | |-- features/
| | | | |-- user-profile-feature/
| | | | | |-- pages/
| | | | | | |-- overview-page/
| | | | | | |-- settings-page/
| | | | | |-- components/
| | | | | |-- services/
| | | | |-- transaction-history-feature/
| | | | | |-- pages/
| | | | | | |-- summary-page/
| | | | | | |-- detailed-page/
| | | | | |-- components/
| | | | | |-- services/
| | | |-- shared/
| | | | |-- components/
| | | | |-- services/
| | | |-- customer-management-module.ts
| |-- assets/
| |-- environments/
| |-- index.html
| |-- main.ts
| |-- styles.css
|-- .angular.json
|-- .gitignore
|-- package.json
|-- tsconfig.json
|-- README.md
|-- angular.json
Key Components
- Core Module: This is where utilities, authentication services, and essential UI components live.
- Shared Module: This is home to components and services reusable across different domains and features.
- Domains: Domains like "finance-domain" and "customer-management-domain" house their own features, shared components, and services.
Advantages
- Modularity: Easier management, scalability, and maintenance.
- Separation of Concerns: Cleaner code that’s easier to maintain.
- Code Reusability: Less duplication and more consistency.
- Feature-Based Organization: Promotes collaboration among developers.
- Easy Navigation: Speeds up the development process and boosts productivity.
Going Beyond: Micro-Frontend, Poly-Repos, Libraries, and Module Federation
The domain-driven setup forms a solid base for your Angular project. But as your project balloons and team needs shift, it’s crucial to see how your setup can morph and tap into advanced architectural concepts like Micro-Frontend, Poly-Repos, Private npm Libraries, and Module Federation.
Transitioning to Micro-Frontend
Start by pinpointing the domains in your current structure. Each domain can morph into a micro-frontend, becoming a self-contained unit with its own frontend and backend parts. This move lets you scale and deploy independently, boosting maintainability and scalability.
Embracing Poly-Repos
To amp up code sharing and manageability, think about moving from monorepo to polyrepo setup. This way, you can have separate repositories for core and shared modules. Plus, these modules can turn into private npm libraries, promoting clean separation and effective code reuse across various projects and services.
Harnessing Private npm Libraries
Private npm libraries provide a structured way to encapsulate and share code bits. Your existing core and shared modules can become private npm libraries, making them accessible across your application. This not only elevates code modularity but also simplifies sharing and maintaining common functionality.
Leveraging Module Federation
Webpack 5’s Module Federation feature is a game-changer for optimizing your setup. By adopting Module Federation, you enable dynamic loading of federated modules, allowing seamless sharing of specific components, services, or modules between micro-frontends. This not only trims down load times but also eases development collaboration.
Nx Workspace
Consider Nx Workspace as a handy toolkit for managing monorepos efficiently, especially as your team expands. Nx Workspace smoothes out development by promoting project libraries (libs) for modular organization.
Conclusion
By adopting these strategies, your Angular application smoothly transitions from its current domain-driven architecture to a versatile setup that includes Micro-Frontend, Poly-Repos, Private npm Libraries, and Module Federation. This makeover gears your project to tackle future growth, complexity, and scalability challenges while keeping code neat and organized.