@fgv/ts-web-extras/docs/ts-web-extras.isdirectoryhandle.md

Browser-compatible utilities and FileTree implementations

<!-- Do not edit this file. It is automatically generated by API Documenter. -->

[Home](./index.md) &gt; [@fgv/ts-web-extras](./ts-web-extras.md) &gt; [isDirectoryHandle](./ts-web-extras.isdirectoryhandle.md)

## isDirectoryHandle() function

Type guard to check if a FileSystemHandle is a directory handle

**Signature:**

```typescript
export declare function isDirectoryHandle(handle: FileSystemHandle): handle is FileSystemDirectoryHandle;
```

## Parameters

<table><thead><tr><th>

Parameter


</th><th>

Type


</th><th>

Description


</th></tr></thead>
<tbody><tr><td>

handle


</td><td>

[FileSystemHandle](./ts-web-extras.filesystemhandle_2.md)


</td><td>

The handle to check


</td></tr>
</tbody></table>

**Returns:**

handle is [FileSystemDirectoryHandle](./ts-web-extras.filesystemdirectoryhandle_2.md)

True if the handle is a FileSystemDirectoryHandle