Code Quality Metrics

Identified Issues

• AuthContext Race Condition

  Critical
  src/context/AuthContext.tsx

  Multiple useEffect hooks compete to set the user state, causing race conditions that can leave users stuck on the login screen. This is particularly problematic in development mode where dev mode initialization conflicts with Firebase's onAuthStateChanged listener.

  Recommendation: Implement a single-source-of-truth pattern using useRef to track initialization state. Ensure dev mode user setting happens synchronously before any Firebase listeners can overwrite it.
  // Use useRef to prevent multiple initializations const initializedRef = useRef(false); if (isDevMode() && !initializedRef.current) { initializedRef.current = true; setUser(devUser); // Set synchronously return; }

• Image Upload Stalling

  Critical
  src/services/firebase.ts

  The compressImage function can hang indefinitely in certain browser environments, causing uploads to stall at 10% (the compression completion point). Without proper error handling or timeouts, users cannot upload images reliably.

  Recommendation: Wrap compression in Promise.race with a timeout (2s dev / 5s prod). Fall back to the original file if compression times out, allowing uploads to proceed.
  const timeoutPromise = new Promise((_, reject) => setTimeout(() => reject(new Error('Compression timed out')), isDevMode() ? 2000 : 5000) ); try { const compressedBlob = await Promise.race([compressImage(file), timeoutPromise]); // Proceed with compressed file } catch (error) { // Fall back to original file }

• Missing Error Boundaries

  Warning
  src/App.tsx

  No React Error Boundary is implemented to gracefully handle and display errors that occur in child components. Uncaught errors could crash the entire application and show blank screens to users.

  Recommendation: Implement a global ErrorBoundary component that catches JavaScript errors, displays a user-friendly error message, and allows users to reload the page or contact support.

Security Findings

• Firestore Security Rules

  Info

  Security rules properly implement email-based access control. Parent chat is correctly hidden from Dominic's account using email pattern matching in rules. No sensitive data exposure identified.

  Status: Secure. Continue regular audits as new features are added.

• API Key Exposure

  Info

  Firebase configuration is exposed in client-side code, which is standard practice for Firebase projects. The project uses Firebase's configured security rules to restrict database access to authorized users only.

  Status: Acceptable. Firebase API keys are not sensitive since all access is controlled by security rules and authorized email addresses.

Performance Observations

The application demonstrates good performance characteristics with a bundle size of approximately 1.1 MB (293 KB gzipped). The following observations were made during the audit:

• Build Time: ~9.4 seconds for production build
• Module Count: 2,537 modules in production bundle
• Dependency Loading: Efficient tree-shaking removes unused code
• Real-time Listeners: Properly cleaned up on component unmount
• State Management: Minimal re-renders due to proper React patterns

Recommendations Summary