AI Code Debugging Generator

## Debug Analysis

### Root Cause:
The bug occurs because of a race condition in the async function. The `await` keyword is missing before the database call, causing the function to return before the data is fetched.

### Explanation:
1. Line 15: `fetchUserData(userId)` is an async function
2. Without `await`, it returns a Promise, not the actual data
3. The subsequent code tries to access properties on the Promise object
4. This causes `undefined` errors or unexpected behavior

### Corrected Code:
```javascript
// BEFORE (buggy)
const userData = fetchUserData(userId);
console.log(userData.name); // undefined!

// AFTER (fixed)
const userData = await fetchUserData(userId);
console.log(userData.name); // Works correctly
```

### Prevention:
- Use ESLint with `require-await` rule
- Add TypeScript for better type checking
- Implement unit tests for async functions
- Code review checklist for async/await patterns