SOLID Principles in JavaScript

Which SOLID principle is violated when a class handles both user authentication and logging operations?

class UserAuth {
  constructor() {
    this.logger = new Logger();
  }

  login(username, password) {
    // Authentication logic
    this.logger.log('User login attempt');
  }

  logout() {
    // Logout logic
    this.logger.log('User logged out');
  }

  generateLoginReport() {
    // Generate login statistics
  }
}

Interface Segregation Principle
Single Responsibility Principle
This code violates the Single Responsibility Principle (SRP). The UserAuth class has multiple responsibilities: authentication, logging, and reporting. According to SRP, a class should have only one reason to change. The solution would be to separate these concerns into different classes: UserAuth for authentication, Logger for logging, and a separate reporting class.
Open/Closed Principle
Dependency Inversion Principle

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