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Monitoring file system changes in macOS
.package(url: "https://github.com/eonist/FileWatcher.git", from: "0.2.3")



A simple file watcher in Swift

Cocoapods platform Lang codebeat badge SwiftLint Sindre mit Status


  • CocoaPods pod "FileWatcher"
  • Carthage github "eonist/FileWatcher" "master"
  • Swift Package Manager https://github.com/eonist/FileWatcher.git
  • Manual Open FileWatcherExample.xcodeproj


This will monitor your Desktop for any file changes:

let filewatcher = FileWatcher([NSString(string: "~/Desktop").expandingTildeInPath])

filewatcher.callback = { event in
  print("Something happened here: " + event.path)

filewatcher.start() // start monitoring

Running FileWatcher on a background thread

The above example will run FileWatcher (ie. its callback function) from the current thread. However, if your callback needs to run for any significatant amount of time (for example when monitoring a folder for photos and you need to run a lenghty image processing algorithm on them), this is rarely a good idea.

If you'd rather have your callback running on a background thread, you can provide your own queue, and FileWatcher will use that (instead of the default current thread / run loop):

filewatcher.queue = DispatchQueue.global()

Notes and documentation:



Stars: 120
Last commit: 4 weeks ago

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iOS Software Engineer @ Perry Street Software
Perry Street Software is Jack’d and SCRUFF. We are two of the world’s largest gay, bi, trans and queer social dating apps on iOS and Android. Our brands reach more than 20 million members worldwide so members can connect, meet and express themselves on a platform that prioritizes privacy and security. We invest heavily into SwiftUI and using Swift Packages to modularize the codebase.

Release Notes

Fix SPM source folder issue
16 weeks ago

See latest commit

Swiftpack is being maintained by Petr Pavlik | @ptrpavlik | @swiftpackco | API