From e2c9cc16924d86997bb129eee0cc8d3d955eaade Mon Sep 17 00:00:00 2001
From: Ash Wilson <smashwilson@gmail.com>
Date: Fri, 18 Aug 2017 09:08:34 -0400
Subject: [PATCH] Private diagnostic method to dump the active watchers

---
 src/native-watcher-registry.js |  8 ++++++++
 src/path-watcher.js            | 12 +++++++++++-
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/native-watcher-registry.js b/src/native-watcher-registry.js
index a779f78f5..0fffe4f77 100644
--- a/src/native-watcher-registry.js
+++ b/src/native-watcher-registry.js
@@ -431,6 +431,14 @@ class NativeWatcherRegistry {
       watcher.attachToNative(native, nativePath)
     })
   }
+
+  // Private: Generate a visual representation of the currently active watchers managed by this
+  // registry.
+  //
+  // Returns a {String} showing the tree structure.
+  print() {
+    return this.tree.print()
+  }
 }
 
 module.exports = {NativeWatcherRegistry}
diff --git a/src/path-watcher.js b/src/path-watcher.js
index 011aa508b..88f9cd77d 100644
--- a/src/path-watcher.js
+++ b/src/path-watcher.js
@@ -581,6 +581,11 @@ class PathWatcherManager {
     return watcher
   }
 
+  // Private: Return a {String} depicting the currently active native watchers.
+  print () {
+    return this.nativeRegistry.print()
+  }
+
   // Private: Stop all living watchers.
   //
   // Returns a {Promise} that resolves when all native watcher resources are disposed.
@@ -641,4 +646,9 @@ function stopAllWatchers () {
   return PathWatcherManager.instance().stopAllWatchers()
 }
 
-module.exports = {watchPath, stopAllWatchers}
+// Private: Show the currently active native watchers.
+function printWatchers () {
+  return PathWatcherManager.instance().print()
+}
+
+module.exports = {watchPath, stopAllWatchers, printWatchers}