Code Quality Standards

This skill provides comprehensive guidance for writing clean, maintainable, and high-quality code.

SOLID Principles

S - Single Responsibility Principle

Definition: A class should have only one reason to change.

// ❌ BAD - Multiple responsibilities
class UserManager {
  createUser(data: UserData) {
    // Validation logic
    if (!data.email.includes('@')) throw new Error('Invalid email');

    // Database logic
    const user = database.insert('users', data);