---
title: "withExportedFile(contentType:fileHandler:)"
framework: coretransferable
role: symbol
role_heading: Instance Method
path: "coretransferable/transferable/withexportedfile(contenttype:filehandler:)"
---

# withExportedFile(contentType:fileHandler:)

Using the type’s Transferable conformance implementation, exports a value by writing it to disk and removes when not needed.

## Declaration

```swift
func withExportedFile<Result>(contentType: UTType?, fileHandler: (URL) async throws -> Result) async throws -> Result
```

## Parameters

- `contentType`: A content type of the requested file. If the content type is not provided, CoreTransferable creates a file from the first TransferRepresentation that supports export.
- `fileHandler`: A closure that accepts a file URL as a parameter. The file is written to a temporary destination and removed after the closure returns.

## Discussion

Discussion This converts a Transferable item into a temporary file, and removes it after fileHandler closure returns. The default implementation of this function is available to all types that conform to Transferable protocol.