clean code

src/client/js/components/PageEditor.jsx

@@ -382,6 +382,7 @@ PageEditor.propTypes = {
   appContainer: PropTypes.instanceOf(AppContainer).isRequired,
   pageContainer: PropTypes.instanceOf(PageContainer).isRequired,
   editorContainer: PropTypes.instanceOf(EditorContainer).isRequired,
+
   crowiRenderer: PropTypes.object.isRequired,
   onSaveWithShortcut: PropTypes.func.isRequired,
 };

src/client/js/services/PageContainer.js

@@ -22,6 +22,7 @@ export default class PageContainer extends Container {
 
 
     this.state = {
+      markdown: null, // will be initialized after initStateMarkdown()
       pageId: mainContent.getAttribute('data-page-id'),
       revisionId: mainContent.getAttribute('data-page-revision-id'),
       revisionCreatedAt: +mainContent.getAttribute('data-page-revision-created'),