Test Shiki Highlighting

# Test Article

Here is some JavaScript code:

```javascript
const greeting = 'Hello, World!';
console.log(greeting);

function add(a, b) {
return a + b;
}
```

And some TypeScript:

```typescript
interface User {
name: string;
age: number;
}

const user: User = { name: 'Rick', age: 30 };
```

The end.