diff --git a/ChangeLog.md b/ChangeLog.md
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+++ b/ChangeLog.md
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+# Revision history for reflex-fsnotify
+
+## 0.1.0.0
+
+* Initial release containing `watchDirectory`.
diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
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+Copyright (c) 2018, Obsidian Systems LLC
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Obsidian Systems LLC nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/README.md b/README.md
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+++ b/README.md
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+# reflex-fsnotify
+
+Watch directories for changes using a functional-reactive interface!
diff --git a/reflex-fsnotify.cabal b/reflex-fsnotify.cabal
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+++ b/reflex-fsnotify.cabal
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+cabal-version: >=1.10
+name: reflex-fsnotify
+version: 0.1.0.0
+synopsis: reflex-frp interface for watching files
+description: Receive FRP events whenever files change.
+bug-reports: https://github.com/reflex-frp/reflex-fsnotify/issues
+license: BSD3
+license-file: LICENSE
+author: Obsidian Systems LLC
+maintainer: maintainer@obsidian.systems
+copyright: 2020 Obsidian Systems LLC
+category: System, FRP
+build-type: Simple
+extra-source-files: ChangeLog.md
+                    README.md
+tested-with: GHC ==8.6.5 || ==8.4.4
+
+library
+  exposed-modules: Reflex.FSNotify
+  build-depends: base >=4.10 && <4.13
+               , fsnotify >= 0.3 && < 0.4
+               , reflex >= 0.5 && < 0.7
+  hs-source-dirs: src
+  default-language: Haskell2010
+  ghc-options: -Wall
+
+source-repository head
+  type: git
+  location: https://github.com/reflex-frp/reflex-fsnotify
diff --git a/src/Reflex/FSNotify.hs b/src/Reflex/FSNotify.hs
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--- /dev/null
+++ b/src/Reflex/FSNotify.hs
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+{-|
+Module: Reflex.FSNotify
+Description: Watch for filesystem changes in reflex
+-}
+
+{-# LANGUAGE FlexibleContexts #-}
+module Reflex.FSNotify where
+
+import Control.Concurrent
+import Control.Monad
+import Control.Monad.IO.Class
+import Reflex
+import qualified System.FSNotify as FS
+
+-- | Watch a directory for changes
+watchDirectory
+  :: (Reflex t, TriggerEvent t m, PerformEvent t m, MonadIO (Performable m))
+  => FS.WatchConfig
+  -> Event t FilePath
+  -> m (Event t FS.Event)
+watchDirectory cfg path =
+  performEventAsync $ ffor path $ \p cb -> liftIO $ void $ forkIO $
+    FS.withManagerConf cfg $ \mgr -> do
+      _ <- FS.watchTree mgr p (const True) cb
+      forever $ threadDelay 1000000
+
+