<!--
{
  "availability" : [
    "macOS: 10.12.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "AppKit",
  "identifier" : "/documentation/AppKit/NSFilePromiseReceiver/fileNames",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "AppKit"
    ],
    "preciseIdentifier" : "c:objc(cs)NSFilePromiseReceiver(py)fileNames"
  },
  "title" : "fileNames"
}
-->

# fileNames

An array containing names of the promised files being written to the destination location.

```
var fileNames: [String] { get }
```

## Discussion

This property returns an empty array until the file promise is called using [`receivePromisedFiles(atDestination:options:operationQueue:reader:)`](/documentation/AppKit/NSFilePromiseReceiver/receivePromisedFiles(atDestination:options:operationQueue:reader:)).

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)