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The Single Responsibility Principle (SRP) in Angular and TypeScript
The Single Responsibility Principle (SRP) is a foundational concept in software design, emphasizing that a class, function, or module should have only one reason to change.
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4 min read5 days ago
This principle, formulated by Robert C. Martin, states:
“A class should have only one reason to change.”
In an Angular and TypeScript context, this means structuring components, services, and modules in a way that ensures each has a single, well-defined responsibility. This improves maintainability, reduces complexity, and enhances testability.
Key Takeaways
- A class or function should be responsible for only one thing.
- Separation of concerns makes the codebase easier to maintain.
- Focused classes improve code reusability.
- Reduces unexpected side effects when modifying code.
Understanding SRP in Angular with an Example
To illustrate SRP in practice, let’s examine a common anti-pattern: a service that handles both data retrieval and logging within the same class.
