Issue 6447 - Switch to Harmony modules in lib/*

lib/filterNotifier.js

Index: lib/filterNotifier.js
===================================================================
--- a/lib/filterNotifier.js
+++ b/lib/filterNotifier.js
@@ -17,33 +17,33 @@
 
 "use strict";
 
 /**
  * @fileOverview This component manages listeners and calls them to distributes
  * messages about filter changes.
  */
 
-const {EventEmitter} = require("./events");
-const {desc} = require("./coreUtils");
+import {EventEmitter} from "./events";
+import {desc} from "./coreUtils";
 
 const CATCH_ALL = "__all";
 
 /**
  * @callback FilterNotifierCatchAllListener
  * @param {string} action
  * @param {Subscription|Filter} item
  * @param {...*} additionalInfo
  */
 
 /**
  * This class allows registering and triggering listeners for filter events.
  * @class
  */
-exports.FilterNotifier = Object.create(new EventEmitter(), desc({
+export let FilterNotifier = Object.create(new EventEmitter(), desc({
   /**
    * Adds a listener
    *
    * @deprecated use FilterNotifier.on(action, callback)
    * @param {FilterNotifierCatchAllListener} listener
    */
   addListener(listener)
   {