// Simple usage let user = new UserProfile(1, { theme: 'dark', notifications: true }); console.log(user.getPreference('theme')); // Outputs: dark user.updatePreference('notifications', false); console.log(user.getPreference('notifications')); // Outputs: false If you could provide more details about RizkyBizz and what ".Personal.1.var" specifically refers to, I could offer a more targeted response.

// Example method to update preferences updatePreference(key, value) { this.preferences[key] = value; }

class UserProfile { constructor(id, preferences = {}) { this.id = id; this.preferences = preferences; }

// Example method to get a preference getPreference(key) { return this.preferences[key]; } }