---
title: NSUserAppleScriptTask.CompletionHandler
framework: foundation
role: symbol
role_heading: Type Alias
path: foundation/nsuserapplescripttask/completionhandler
---

# NSUserAppleScriptTask.CompletionHandler

Implement this block to retrieve the result of the AppleScript executed by execute(withAppleEvent:completionHandler:).

## Declaration

```swift
typealias CompletionHandler = @Sendable (NSAppleEventDescriptor?, (any Error)?) -> Void
```