Type Safety Review

Format: Check for type safety issues in the code.

Warning Signs:

// 1. Using any (bypasses type checking)
function process(data: any) { ... }

// 2. Type assertions (forcefully telling the compiler "I know better")
const user = data as User

// 3. Ignoring potentially null values
user.name.toUpperCase()  // What if user.name is null/undefined?

// 4. Not validating API responses
const { data } = await fetch('/api/users')
// Is data actually in the format you expect?