Understanding SOLID design principles with easy coding examples

This article provides a clear and concise overview of the SOLID design principles, accompanied by straightforward code examples to help you grasp each concept with ease.

SOLID is a set of five design principles intended to make software designs more understandable, flexible, and maintainable.

The principles are particularly useful in object-oriented design and are commonly applied in front-end and back-end development. Here’s a brief overview of each SOLID principle with a code example in TypeScript:

S — Single Responsibility Principle (SRP)

A class should have one and only one reason to change, meaning it should have only one job or responsibility.

This principle encourages a focused approach, ensuring that changes or updates to one aspect of your UI won’t inadvertently affect unrelated parts.

// UserProfile.tsx
import React from 'react';

interface UserProfileProps {
  username: string;
  email: string;
}

const UserProfile: React.FC<UserProfileProps> = ({ username, email }) => {
  return (
    <div>
      <h2>{username}</h2>
      <p>{email}</p>
    </div>
  );
};

export default UserProfile;