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SOLID Principles in TypeScript

This repository contains the implementation of the design patterns using TypeScript.

SOLID is an acronym that represents a set of five design principles for writing maintainable and scalable software. These principles were introduced by Robert C. Martin and have become a fundamental guide for object-oriented design.

  • ☝️ Single Responsibility Principle (SRP)
  • 🔒 Open/Closed Principle (OCP)
  • 🔀 Liskov Substitution Principle (LSP)
  • 🧩 Interface Segregation Principle (ISP)
  • 🔄 Dependency Inversion Principle (DIP)

📊 Classification of SOLID Principles

☝️ Single Responsibility Principle (SRP)

The SRP states that a class should have only one reason to change, meaning it should have only one responsibility or job. This principle encourages the creation of small, focused classes.

🔒 Open/Closed Principle (OCP)

The OCP dictates that a class should be open for extension but closed for modification. This means that the behavior of a module can be extended without modifying its source code.

🔀 Liskov Substitution Principle (LSP)

The LSP states that objects of a superclass should be replaceable with objects of a subclass without affecting the correctness of the program. Subtypes must be substitutable for their base types.

🧩 Interface Segregation Principle (ISP)

The ISP suggests that a class should not be forced to implement interfaces it does not use. Instead of a large, monolithic interface, clients should not be forced to depend on interfaces they do not use.

🔄 Dependency Inversion Principle (DIP)

The DIP states that high-level modules should not depend on low-level modules; both should depend on abstractions. It promotes the use of interfaces or abstract classes to decouple higher and lower-level components.

🙌 Benefits of SOLID Principles

  1. 🛠️ Improved Maintainability: Code becomes more modular and less prone to bugs. This makes it easier to understand, maintain, and modify.

  2. 🤸‍♀️ Enhanced Flexibility: Promote loose coupling between components. This makes it easier to replace or modify one component without affecting others, enhancing the flexibility of your codebase.

  3. 🔍 Increased Readability: Cleaner, more organized code. This, in turn, improves code readability, making it easier for developers to understand and work with the codebase.

  4. 📈 Scalability: Encourage the creation of code that is more scalable. This means that as your project grows, it's easier to extend and add new features without causing a cascade of changes throughout the system.

  5. 🧪 Easier Testing: Promote the creation of code that is more testable. Components are often more independent, making it simpler to write unit tests and ensure the correctness of individual modules.

  6. ♻️ Reusable Components: Create components that are more modular and can be easily reused in different parts of your application or even in other projects.

  7. 🤝🏻 Better Collaboration: Easier for developers to collaborate. Code that follows these principles is generally more understandable and less error-prone, reducing conflicts between team members.

  8. 🌺 Reduction of Code Smells: Eliminate common code smells like duplicated code, tight coupling, and fragile base class problems. This leads to cleaner, more maintainable code.

  9. 🔄 Adaptability to Change: Better equipped to adapt. The modular nature of the code allows for easier modification and addition of features without causing widespread impact.

  10. 🐛 Simplified Debugging: Easier to debug. With well-defined and isolated components, identifying and fixing issues becomes a more straightforward process.