Phase 4 establishes the core application structure with SvelteKit routing,
data loading, error handling, and state management.
## Routing & Data Loading
- Created root layout load function (+layout.ts) with app version and feature flags
- Implemented comprehensive error boundary (+error.svelte) with status-based messages
- Added page loaders for homepage, matches, players, and about routes
- Homepage loader fetches featured matches via API with error fallback
- Matches loader supports URL query parameters (map, player_id, limit)
## State Management (Svelte Stores)
- preferences.ts: User settings with localStorage persistence
* Theme selection (cs2dark, cs2light, auto)
* Favorite players tracking
* Advanced stats toggle, date format preferences
- search.ts: Search state with recent searches (localStorage)
- toast.ts: Toast notification system with auto-dismiss
* Success, error, warning, info types
* Configurable duration and dismissibility
## UI Components
- Toast.svelte: Individual notification with Lucide icons
- ToastContainer.svelte: Fixed top-right toast display
- Integrated ToastContainer into root layout
## Fixes
- Fixed Svelte 5 deprecation warnings (removed <svelte:component> in runes mode)
- Updated homepage to use PageData from loader
- Added proper type safety across all load functions
## Testing
- Type check: 0 errors, 0 warnings
- Production build: Successful
- All Phase 4 core objectives completed
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Phase 3 (Domain Modeling & Data Layer) is now 100% complete:
- ✅ TypeScript interfaces for all data models
- ✅ Zod schemas with runtime validation
- ✅ API client with error handling and cancellation
- ✅ MSW mock handlers for testing
- Real-time features deferred to Phase 5
Now starting Phase 4: Application Architecture & Routing
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Implements comprehensive type system, runtime validation, API client,
and testing infrastructure for CS2.WTF.
TypeScript Interfaces (src/lib/types/):
- Match.ts: Match, MatchPlayer, MatchListItem types
- Player.ts: Player, PlayerMeta, PlayerProfile types
- RoundStats.ts: Round economy and performance data
- Weapon.ts: Weapon statistics with hit groups (HitGroup, WeaponType enums)
- Message.ts: Chat messages with filtering support
- api.ts: API responses, errors, and APIException class
- Complete type safety with strict null checks
Zod Schemas (src/lib/schemas/):
- Runtime validation for all data models
- Schema parsers with safe/unsafe variants
- Special handling for backend typo (looses → losses)
- Share code validation regex
- CS2-specific validations (rank 0-30000, MR12 rounds)
API Client (src/lib/api/):
- client.ts: Axios-based HTTP client with error handling
- Request cancellation support (AbortController)
- Automatic retry logic for transient failures
- Timeout handling (10s default)
- Typed APIException errors
- players.ts: Player endpoints (profile, meta, track/untrack, search)
- matches.ts: Match endpoints (parse, details, weapons, rounds, chat, search)
- Zod validation on all API responses
MSW Mock Handlers (src/mocks/):
- fixtures.ts: Comprehensive mock data for testing
- handlers/players.ts: Mock player API endpoints
- handlers/matches.ts: Mock match API endpoints
- browser.ts: Browser MSW worker for development
- server.ts: Node MSW server for Vitest tests
- Realistic responses with delays and pagination
- Safe integer IDs to avoid precision loss
Configuration:
- .env.example: Complete environment variable documentation
- src/vite-env.d.ts: Vite environment type definitions
- All strict TypeScript checks passing (0 errors, 0 warnings)
Features:
- Cancellable requests for search (prevent race conditions)
- Data normalization (backend typo handling)
- Comprehensive error types (NetworkError, Timeout, etc.)
- Share code parsing and validation
- Pagination support for players and matches
- Mock data for offline development and testing
Build Status: ✓ Production build successful
Type Check: ✓ 0 errors, 0 warnings
Lint: ✓ All checks passed
Phase 3 Completion: 100%
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Reflect backend audit findings in TODO.md:
- 12 REST endpoints documented for player, match, matches, and sitemap
- Data models aligned with backend schemas (Match, Player, MatchPlayer,
etc.)
- CS2 compatibility confirmed with Premier rating support (0-30000)
Add comprehensive API documentation covering:
- Endpoint specifications and response structures
- Integration guide with TypeScript examples
- Error handling and caching strategies
- CS2 migration notes for rank system and MR12 changes
