import FileMonitor from './FileMonitor';
import {
  BaseFileState,
  ContentHashState,
  LastModifiedState,
  SizeState,
  SmartState,
} from './states';

export {
  FileMonitor,
  BaseFileState,
  ContentHashState,
  LastModifiedState,
  SizeState,
  SmartState
};

import FileMonitor from './FileMonitor';
import {
  BaseFileState,
  CombinedState
} from './states';

export {
  FileMonitor,
  BaseFileState,
  CombinedState
};

--- 
+++ 
@@ -1,17 +1,11 @@
 import FileMonitor from './FileMonitor';
 import {
   BaseFileState,
-  ContentHashState,
-  LastModifiedState,
-  SizeState,
-  SmartState,
+  CombinedState
 } from './states';
 
 export {
   FileMonitor,
   BaseFileState,
-  ContentHashState,
-  LastModifiedState,
-  SizeState,
-  SmartState
+  CombinedState
 };
Add export statement for all states

