Index: lib/elemHideExceptions.js
===================================================================
--- a/lib/elemHideExceptions.js
+++ b/lib/elemHideExceptions.js
@@ -17,17 +17,17 @@
 
 "use strict";
 
 /**
  * @fileOverview Element hiding exceptions implementation.
  */
 
 const {EventEmitter} = require("./events");
-const {FilterNotifier} = require("./filterNotifier");
+const {filterNotifier} = require("./filterNotifier");
 
 /**
  * Lookup table, lists of element hiding exceptions by selector
  * @type {Map.<string,ElemHideException[]>}
  */
 let exceptions = new Map();
 
 /**
@@ -44,17 +44,17 @@
   /**
    * Removes all known exceptions
    */
   clear()
   {
     exceptions.clear();
     knownExceptions.clear();
 
-    FilterNotifier.emit("elemhideupdate");
+    filterNotifier.emit("elemhideupdate");
   },
 
   /**
    * Add a new element hiding exception
    * @param {ElemHideException} exception
    */
   add(exception)
   {
@@ -67,17 +67,17 @@
       list.push(exception);
     else
       exceptions.set(selector, [exception]);
 
     knownExceptions.add(exception);
 
     this.emit("added", exception);
 
-    FilterNotifier.emit("elemhideupdate");
+    filterNotifier.emit("elemhideupdate");
   },
 
   /**
    * Removes an element hiding exception
    * @param {ElemHideException} exception
    */
   remove(exception)
   {
@@ -88,17 +88,17 @@
     let index = list.indexOf(exception);
     if (index >= 0)
       list.splice(index, 1);
 
     knownExceptions.delete(exception);
 
     this.emit("removed", exception);
 
-    FilterNotifier.emit("elemhideupdate");
+    filterNotifier.emit("elemhideupdate");
   },
 
   /**
    * Checks whether any exception rules are registered for a selector
    * @param {string} selector
    * @returns {boolean}
    */
   hasExceptions(selector)