---
title: fileSystem
framework: fskit
role: symbol
role_heading: Instance Property
path: fskit/unaryfilesystemextension/filesystem-swift.property
---

# fileSystem

The instance of your file system type that your app extension provides.

## Declaration

```swift
var fileSystem: Self.FileSystem { get }
```

## See Also

### Declaring the implemented file system

- [FileSystem](fskit/unaryfilesystemextension/filesystem-swift.associatedtype.md)