Writing Clean & Maintainable Code

Which SOLID principle is violated in this code example?

class UserManager {
  constructor() {
    this.users = [];
  }
  addUser(user) {
    this.users.push(user);
  }
  sendEmail(user, content) {
    // Email sending logic here
  }
  saveToDatabase(user) {
    // Database operations here
  }
}

Dependency Inversion Principle
Single Responsibility Principle
This code violates the Single Responsibility Principle (SRP). The UserManager class has multiple responsibilities: managing users, handling email communications, and database operations. According to SRP, a class should have only one reason to change. The code should be refactored to separate these concerns into different classes.
Open/Closed Principle
Liskov Substitution Principle

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