Address review comments.

Author: davidmorgan

pkgs/watcher/lib/src/directory_watcher/windows.dart

@@ -21,7 +21,7 @@ class WindowsDirectoryWatcher extends ResubscribableWatcher
   String get directory => path;
 
   WindowsDirectoryWatcher(String directory)
-      : super(directory, () => _WindowsDirectoryWatcher(directory));
+    : super(directory, () => _WindowsDirectoryWatcher(directory));
 }
 
 class _EventBatcher {
@@ -169,9 +169,10 @@ class _WindowsDirectoryWatcher
   void _onBatch(List<FileSystemEvent> batch) {
     _sortEvents(batch).forEach((path, eventSet) {
       var canonicalEvent = _canonicalEvent(eventSet);
-      var events = canonicalEvent == null
-          ? _eventsBasedOnFileSystem(path)
-          : [canonicalEvent];
+      var events =
+          canonicalEvent == null
+              ? _eventsBasedOnFileSystem(path)
+              : [canonicalEvent];
 
       for (var event in events) {
         if (event is FileSystemCreateEvent) {
@@ -199,7 +200,10 @@ class _WindowsDirectoryWatcher
           subscription.onError((Object e, StackTrace stackTrace) {
             _listSubscriptions.remove(subscription);
             // "Path not found" can be caused by creating then quickly removing
-            // a directory: continue without reporting an error.
+            // a directory: continue without reporting an error. Nested files
+            // that get removed during the `list` are already ignored by `list`
+            // itself, so there are no other types of "path not found" that
+            // might need different handling here.
             if (e is! PathNotFoundException) {
               _emitError(e, stackTrace);
             }