Implemented null/undefined handling throughout NavigationController
and useNavigationFlow hook to prevent crashes from invalid data:
- Added null checks for all profile and beneficiary parameters
- Validated beneficiary IDs before navigation (type and value checks)
- Added fallback routes when data is invalid or missing
- Implemented safe navigation with error handling and logging
- Added defensive guards for optional purchaseResult parameter
Key improvements:
- getRouteAfterLogin: handles null profile, null beneficiaries, invalid IDs
- getRouteForBeneficiarySetup: validates beneficiary exists before routing
- getRouteAfterAddBeneficiary: validates beneficiary ID type and value
- getRouteAfterPurchase: handles null purchaseResult safely
- getBeneficiaryRoute: returns fallback route for invalid beneficiaries
- navigate hook: wraps router calls in try-catch with validation
All methods now gracefully handle edge cases without crashing,
logging warnings for debugging while maintaining UX flow.
Tests included for all null/undefined scenarios.
Implemented a reusable useDebounce hook to prevent rapid-fire clicks
on refresh buttons throughout the application.
Changes:
- Created hooks/useDebounce.ts with configurable delay and leading/trailing edge options
- Added comprehensive unit tests in hooks/__tests__/useDebounce.test.ts
- Applied debouncing to dashboard WebView refresh button (app/(tabs)/dashboard.tsx)
- Applied debouncing to beneficiary detail pull-to-refresh (app/(tabs)/beneficiaries/[id]/index.tsx)
- Applied debouncing to equipment screen refresh (app/(tabs)/beneficiaries/[id]/equipment.tsx)
- Applied debouncing to all error retry buttons (components/ui/ErrorMessage.tsx)
- Fixed jest.setup.js to properly mock React Native modules
- Added implementation documentation in docs/DEBOUNCE_IMPLEMENTATION.md
Technical details:
- Default 1-second debounce delay
- Leading edge execution (immediate first call, then debounce)
- Type-safe with TypeScript generics
- Automatic cleanup on component unmount
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
