# UML Viewer Module Export Fix

## Issue
```
The requested module '/src/components/uml/UMLVisualization.tsx' does not provide an export named 'UMLDiagram'
```

## Root Cause
TypeScript interfaces being imported with runtime `import` statement instead of `import type` statement.

## Solution
Changed import statement in `UMLParser.ts`:

**Before**:
```typescript
import { UMLDiagram, UMLNode, UMLLink } from './UMLVisualization';
```

**After**:
```typescript
import type { UMLDiagram, UMLNode, UMLLink } from './UMLVisualization';
```

## Why This Fixes It
- `UMLDiagram`, `UMLNode`, and `UMLLink` are TypeScript **interfaces** (type-only exports)
- Using `import type` tells TypeScript/Vite these are compile-time only imports
- Prevents Vite from looking for runtime exports that don't exist

## Files Modified
- `frontend/src/components/uml/UMLParser.ts` (line 1)

## Testing
1. Dev server is running on `http://localhost:5173`
2. Navigate to `/uml-viewer` route
3. Should now load without module export errors

## Next Steps
- Test the UML Viewer page loads correctly
- Verify schema diagram selection works
- Test zoom, pan, and node interactions