What design patterns and code quality principles do you use when developing with React/TypeScript? How do you apply SOLID principles in frontend development?

When developing with React/TypeScript, I use the following patterns and code quality principles:

• Component-based approach — breaking down UI into reusable, isolated components.
• Containers and presentational components — separation of logic and display.
• Hooks — for managing state and side effects, which improves readability and reusability of logic.
• Factory or Strategy pattern — for selecting component behavior based on props.
• Using TypeScript — strict typing helps avoid errors and improves autocomplete.

The SOLID principles in frontend development are applied as follows:

• S (Single Responsibility Principle) — each component or module is responsible for one task.
• O (Open/Closed Principle) — components are extendable without modifying existing code, for example through composition.
• L (Liskov Substitution Principle) — components and functions should be interchangeable without breaking logic.
• I (Interface Segregation Principle) — component interfaces and props are minimal and specific.
• D (Dependency Inversion Principle) — dependencies are inverted through props or context, facilitating testing and reusability.

Example of applying SOLID in React:

interface ButtonProps {
  onClick: () => void;
  label: string;
}

const Button: React.FC<ButtonProps> = ({ onClick, label }) => {
  return <button onClick={onClick}>{label}</button>;
};
// The component is only responsible for rendering the button (SRP)
// It can be extended by creating new components without changing Button (OCP)

Thus, following these principles and patterns enhances the quality, maintainability, and scalability of frontend code.