Applying the SOLDIER Principle in Angular and TypeScript

Software development thrives on clear, maintainable, and scalable code. The SOLDIER principle — Simple, Obvious, Lightweight, Domain-focused, Independent, Essential, and Refactorable — serves as a powerful guideline for structuring Angular applications using TypeScript. This article explores each principle with practical examples to demonstrate how to build robust Angular applications while adhering to these principles.

1. Simple: Keep It Straightforward

Simplicity ensures that code remains readable and maintainable. Overcomplicating solutions often leads to unnecessary technical debt.

Example:

Instead of adding unnecessary abstraction, focus on clarity:

// Complex and unnecessary abstraction
@Injectable({ providedIn: 'root' })
export class UserService {
  constructor(private http: HttpClient) {}

  getUser(): Observable<User> {
    return this.http.get<User>('/api/user');
  }
}

// Simple and clear approach
getUser(): Observable<User> {…