spec fixes

app/assets/javascripts/flash.js

 import _ from 'underscore';
 const hideFlash = (flashEl) => {
-  flashEl.style.transition = 'opacity .3s'; // eslint-disable-line no-param-reassign
-  flashEl.style.opacity = '0'; // eslint-disable-line no-param-reassign
+  Object.assign(flashEl.style, {
+    transition: 'opacity .3s',
+    opacity: '0',
+  });
   flashEl.addEventListener('transitionend', () => {
     flashEl.remove();
@@ -33,8 +35,11 @@ const createFlashEl = (message, type) => `
   </div>
 `;
-const Flash = function Flash(message, type = 'alert', parent = document, actionConfig = null) {
+const createFlash = function createFlash(message, type = 'alert', parent = document, actionConfig = null) {
   const flashContainer = parent.querySelector('.flash-container');
+
+  if (!flashContainer) return null;
+
   flashContainer.innerHTML = createFlashEl(message, type);
   const flashEl = flashContainer.querySelector(`.flash-${type}`);
@@ -61,8 +66,8 @@ const Flash = function Flash(message, type = 'alert', parent = document, actionC
 };
 export {
-  Flash as default,
+  createFlash as default,
   createFlashEl,
   hideFlash,
 };
-window.Flash = Flash;
+window.Flash = createFlash;

app/assets/javascripts/notes.js

@@ -354,7 +354,7 @@ export default class Notes {
             Object.keys(noteEntity.commands_changes).length > 0) {
           $notesList.find('.system-note.being-posted').remove();
         }
-        this.addFlash(noteEntity.errors.commands_only, 'notice', this.parentTimeline); // TODO: CHECK THIS!
+        this.addFlash(noteEntity.errors.commands_only, 'notice', this.parentTimeline.get(0));
         this.refresh();
       }
       return;
@@ -593,7 +593,7 @@ export default class Notes {
     } else if ($form.hasClass('js-discussion-note-form')) {
       formParentTimeline = $form.closest('.discussion-notes').find('.notes');
     }
-    return this.addFlash('Your comment could not be submitted! Please check your network connection and try again.', 'alert', formParentTimeline);
+    return this.addFlash('Your comment could not be submitted! Please check your network connection and try again.', 'alert', formParentTimeline.get(0));
   }
   updateNoteError($parentTimeline) {

spec/javascripts/integrations/integration_settings_form_spec.js

@@ -181,7 +181,7 @@ describe('IntegrationSettingsForm', () => {
       deferred.reject();
-      expect($('.flash-container .flash-text').text()).toEqual(errorMessage);
+      expect($('.flash-container .flash-text').text().trim()).toEqual(errorMessage);
     });
     it('should always call `toggleSubmitBtnState` with `false` once request is completed', () => {