Review: null/undefined Handling

1interface User {
2  id: number;
3  name: string;
4  profile: {
5    avatar: string;
6    bio: string;
7  } | null;
8  settings: {
9    notifications: boolean;
10    theme: string;
11  };
12}
13 
14function displayUserInfo(user: User): string {
15  // Display user information
16  const avatar = user.profile.avatar;
17  const bio = user.profile.bio || 'No bio';
18  const notifications = user.settings.notifications;
19  
20  return `
21    Name: ${user.name}
22    Avatar: ${avatar}
23    Bio: ${bio}
24    Notifications: ${notifications}
25  `;
26}
27 
28export { displayUserInfo };