moved some code into new files

fixed duplication of code

app/assets/javascripts/dispatcher.js

@@ -30,7 +30,6 @@
 /* global IssuableContext */
 /* global IssueStatusSelect */
 /* global SubscriptionSelect */
-/* global Notes */
 import Issue from './issue';
 import BindInOut from './behaviors/bind_in_out';
@@ -66,6 +65,9 @@ import initSettingsPanels from './settings_panels';
 import initExperimentalFlags from './experimental_flags';
 import OAuthRememberMe from './oauth_remember_me';
 import PerformanceBar from './performance_bar';
+import initNotes from './init_notes';
+import initLegacyFilters from './init_legacy_filters';
+import initIssuableSidebar from './init_issuable_sidebar';
 (function() {
   var Dispatcher;
@@ -130,42 +132,6 @@ import PerformanceBar from './performance_bar';
           .init();
       }
-      function initIssuableSidebar() {
-        new MilestoneSelect({
-          full_path: gl.sidebarOptions.fullPath,
-        });
-        new LabelsSelect();
-        new IssuableContext(gl.sidebarOptions.currentUser);
-        gl.Subscription.bindAll('.subscription');
-        new gl.DueDateSelectors();
-        window.sidebar = new Sidebar();
-      }
-
-      function initLegacyFilters() {
-        new UsersSelect();
-        new LabelsSelect();
-        new MilestoneSelect();
-        new IssueStatusSelect();
-        new SubscriptionSelect();
-        $('form.filter-form').on('submit', function (event) {
-          event.preventDefault();
-          gl.utils.visitUrl(`${this.action}&${$(this).serialize()}`);
-        });
-      }
-
-      function initNotes() {
-        const dataEl = document.querySelector('.js-notes-data');
-        const {
-          notesUrl,
-          notesIds,
-          now,
-          diffView,
-          autocomplete,
-        } = JSON.parse(dataEl.innerHTML);
-
-        window.notes = new Notes(notesUrl, notesIds, now, diffView, autocomplete);
-      }
-
       switch (page) {
         case 'profiles:preferences:show':
           initExperimentalFlags();

app/assets/javascripts/init_issuable_sidebar.js

+/* eslint-disable no-new */
+/* global MilestoneSelect */
+/* global LabelsSelect */
+/* global IssuableContext */
+/* global Sidebar */
+
+export default () => {
+  new MilestoneSelect({
+    full_path: gl.sidebarOptions.fullPath,
+  });
+  new LabelsSelect();
+  new IssuableContext(gl.sidebarOptions.currentUser);
+  gl.Subscription.bindAll('.subscription');
+  new gl.DueDateSelectors();
+  window.sidebar = new Sidebar();
+};

app/assets/javascripts/init_legacy_filters.js

+/* eslint-disable no-new */
+/* global UsersSelect */
+/* global LabelsSelect */
+/* global MilestoneSelect */
+/* global IssueStatusSelect */
+/* global SubscriptionSelect */
+
+export default () => {
+  new UsersSelect();
+  new LabelsSelect();
+  new MilestoneSelect();
+  new IssueStatusSelect();
+  new SubscriptionSelect();
+};

app/assets/javascripts/init_notes.js

+/* global Notes */
+
+export default () => {
+  const dataEl = document.querySelector('.js-notes-data');
+  const {
+    notesUrl,
+    notesIds,
+    now,
+    diffView,
+    autocomplete,
+  } = JSON.parse(dataEl.innerHTML);
+
+  window.notes = new Notes(notesUrl, notesIds, now, diffView, autocomplete);
+};

app/assets/javascripts/main.js

@@ -346,4 +346,9 @@ $(function () {
   gl.utils.renderTimeago();
   $(document).trigger('init.scrolling-tabs');
+
+  $('form.filter-form').on('submit', function (event) {
+    event.preventDefault();
+    gl.utils.visitUrl(`${this.action}&${$(this).serialize()}`);
+  });
 });

app/assets/javascripts/todos.js

@@ -37,10 +37,6 @@ export default class Todos {
     this.initFilterDropdown($('.js-type-search'), 'type');
     this.initFilterDropdown($('.js-action-search'), 'action_id');
-    $('form.filter-form').on('submit', function applyFilters(event) {
-      event.preventDefault();
-      gl.utils.visitUrl(`${this.action}&${$(this).serialize()}`);
-    });
     return new UsersSelect();
   }