SOLID Principles in TypeScript

↝ Robert C. Martin, also known as Uncle Bob, introduced the SOLID principles. These principles help you design your classes in a way that they can gracefully accommodate change. As we know, maintaining and modifying code could be challenging, but with SOLID principles, you'll gain numerous benefits, such as:

• Loose coupling: Classes are not totally dependent on each other. We prefer abstractions rather than concrete implementations. This makes your code more flexible and easier to test.

• Maintainability: Well-structured classes are easier to understand and modify.

• Reusability: Classes are not dependent on each other and might not know the existence of other classes, so there's a high chance that your class might be reusable.

• Reliability: Since classes are testable, it promotes code that is more reliable and less prone to errors.

• Testability: SOLID principles often lead to well-defined interfaces and smaller classes, making them easier to test in isolation.

• Adaptability: This means that your code will surely adapt to future changes and requirements.

In the following sections, we'll delve deeper into each SOLID principle and explore how TypeScript empowers us to implement them effectively.

• Single-Responsibility Principle

• Open/Closed Principle

• Liskov Substitution Principle

• Interface Segregation Principle

• Dependency Injection Principle