---
title: ConstFSEventStreamRef
framework: Core Services
role: symbol
role_heading: Type Alias
platforms: [Mac Catalyst 13.0+, macOS 10.5+]
path: coreservices/constfseventstreamref
---

# ConstFSEventStreamRef

## Declaration

```swift
typealias ConstFSEventStreamRef = OpaquePointer
```

## Discussion

Discussion This is the type of a reference to a constant FSEventStream.