require props

src/client/js/components/Page/TagViewer.jsx

@@ -102,5 +102,5 @@ export default class TagViewer extends React.Component {
 TagViewer.propTypes = {
   crowi: PropTypes.object.isRequired,
   pageId: PropTypes.string,
-  sendTagData: PropTypes.func,
+  sendTagData: PropTypes.func.isRequired,
 };

src/client/js/components/PageTagForm.jsx

@@ -62,8 +62,8 @@ export default class PageTagForm extends React.Component {
 
 PageTagForm.propTypes = {
   crowi: PropTypes.object.isRequired,
-  currentPageTags: PropTypes.array,
-  addNewTag: PropTypes.func,
+  currentPageTags: PropTypes.array.isRequired,
+  addNewTag: PropTypes.func.isRequired,
 };
 
 PageTagForm.defaultProps = {