# Functions (/themes/sdk/reference/ui/functions)

```ts
import { … } from '@poltura/theme-sdk/ui';
```

## `cn` [#cn]

Joins class names, skips falsy ones and resolves conflicting Tailwind classes so the last one wins.

```ts
cn(...inputs: ClassValue[]): string
```

**Parameters**

- `inputs: ClassValue[]`: The class names, arrays and `{ name: condition }` objects to join.

**Returns:** One class name string.