Implemented a comprehensive CORS proxy solution that works with both
local and remote backends during development.
## Changes
### Vite Configuration (vite.config.ts)
- Use loadEnv() to properly read VITE_API_BASE_URL from .env
- Configure proxy to forward /api/* requests to backend
- Add detailed logging for proxy requests and responses
- Support changeOrigin, rewrite, secure=false, and websockets
### API Client (src/lib/api/client.ts)
- In development: Always use /api prefix (proxied)
- In production: Use direct VITE_API_BASE_URL
- Add console logging to show proxy configuration in dev mode
- Automatic detection of environment (DEV vs PROD)
### Error Handling (route loaders)
- Fix console.error() calls that caused TypeError with circular refs
- Use error.message instead of logging full error objects
- Affects: +page.ts, matches/+page.ts
### Documentation
- docs/LOCAL_DEVELOPMENT.md: Complete rewrite with proxy explanation
- Quick start guide for both production API and local backend
- Detailed proxy flow diagrams
- Comprehensive troubleshooting section
- Clear examples and logs
- docs/CORS_PROXY.md: Technical deep-dive on proxy implementation
- How the proxy works internally
- Configuration options explained
- Testing procedures
- Common issues and solutions
- .env.example: Updated with proxy documentation
## How It Works
Development Flow:
1. Frontend makes request: /api/matches
2. Vite proxy intercepts and forwards to: ${VITE_API_BASE_URL}/matches
3. Backend responds (no CORS headers needed)
4. Proxy returns response to frontend (same-origin)
Production Flow:
1. Frontend makes request directly to: https://api.csgow.tf/matches
2. Backend responds with CORS headers
3. Browser allows request (CORS enabled on backend)
## Benefits
✅ No CORS errors in development
✅ Works with local backend (localhost:8000)
✅ Works with remote backend (api.csgow.tf)
✅ Simple configuration (just set VITE_API_BASE_URL)
✅ Detailed logging for debugging
✅ Production build unaffected (direct requests)
## Testing
Verified with production API:
- curl https://api.csgow.tf/matches ✓
- Dev server proxy logs show successful forwarding ✓
- Browser Network tab shows /api/* requests ✓
- No CORS errors in console ✓
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
