## formatPeriod() function  
Formats a FHIR Period as a human readable string.

**Signature:**

```typescript
export declare function formatPeriod(period: Period | undefined, locales?: Intl.LocalesArgument, options?: Intl.DateTimeFormatOptions): string;
```

## Parameters  
| Parameter | Type | Description |
| --- | --- | --- |
| period | Period \| undefined | The period to format. |
| locales | Intl.LocalesArgument | _(Optional)_ Optional locales. |
| options | Intl.DateTimeFormatOptions | _(Optional)_ Optional period format options. |

**Returns:**

string

The formatted period string.