After exploring Dependency Inversion, Interface Segregation, and Liskov Substitution, let’s tackle the Open-Closed Principle (OCP) in the context of modern React applications. The Open-Closed Principle states that software entities should be open for extension but closed for modification. In React terms, components should be easy to extend without changing their existing code. Here’s a common anti-pattern where a Button component violates OCP by requiring direct modification for each variant. To solve this, the article demonstrates how to refactor the Button component to follow OCP by creating a ButtonBase component and variant components. The article also discusses the Component Composition Pattern using a Card component as an example, showing how components can be extended without modification. Overall, the article emphasizes the importance of following OCP in building extensible components in React.
