memorized some components of sidebar

packages/app/src/components/Sidebar.tsx

@@ -1,5 +1,5 @@
 import React, {
-  useCallback, useEffect, useRef, useState,
+  memo, useCallback, useEffect, useRef, useState,
 } from 'react';
 
 import dynamic from 'next/dynamic';
@@ -31,7 +31,7 @@ const sidebarMinWidth = 240;
 const sidebarMinimizeWidth = 20;
 const sidebarFixedWidthInDrawerMode = 320;
 
-const GlobalNavigation = () => {
+const GlobalNavigation = memo(() => {
   const { data: isDrawerMode } = useDrawerMode();
   const { data: currentContents } = useCurrentSidebarContents();
   const { data: isCollapsed, mutate: mutateSidebarCollapsed } = useSidebarCollapsed();
@@ -58,9 +58,10 @@ const GlobalNavigation = () => {
 
   return <SidebarNav onItemSelected={itemSelectedHandler} />;
 
-};
+});
+GlobalNavigation.displayName = 'GlobalNavigation';
 
-const SidebarContentsWrapper = () => {
+const SidebarContentsWrapper = memo(() => {
   const { mutate: mutateSidebarScroller } = useSidebarScrollerRef();
 
   const calcViewHeight = useCallback(() => {
@@ -85,10 +86,11 @@ const SidebarContentsWrapper = () => {
       <DrawerToggler iconClass="icon-arrow-left" />
     </>
   );
-};
+});
+SidebarContentsWrapper.displayName = 'SidebarContentsWrapper';
 
 
-const Sidebar = (): JSX.Element => {
+const Sidebar = memo((): JSX.Element => {
 
   const { data: isDrawerMode } = useDrawerMode();
   const { data: isDrawerOpened, mutate: mutateDrawerOpened } = useDrawerOpened();
@@ -354,6 +356,7 @@ const Sidebar = (): JSX.Element => {
     </>
   );
 
-};
+});
+Sidebar.displayName = 'Sidebar';
 
 export default Sidebar;

packages/app/src/components/Sidebar/SidebarContents.tsx

@@ -1,4 +1,4 @@
-import React from 'react';
+import React, { memo } from 'react';
 
 import { SidebarContentsType } from '~/interfaces/ui';
 import { useCurrentSidebarContents } from '~/stores/ui';
@@ -8,7 +8,7 @@ import PageTree from './PageTree';
 import RecentChanges from './RecentChanges';
 import Tag from './Tag';
 
-export const SidebarContents = (): JSX.Element => {
+export const SidebarContents = memo(() => {
   const { data: currentSidebarContents } = useCurrentSidebarContents();
 
   let Contents;
@@ -29,5 +29,5 @@ export const SidebarContents = (): JSX.Element => {
   return (
     <Contents />
   );
-
-};
+});
+SidebarContents.displayName = 'SidebarContents';

packages/app/src/components/Sidebar/Skeleton/SidebarSkeleton.tsx

@@ -1,4 +1,4 @@
-import React from 'react';
+import React, { memo } from 'react';
 
 import { useTranslation } from 'next-i18next';
 
@@ -10,7 +10,7 @@ import PageTreeContentSkeleton from './PageTreeContentSkeleton';
 import RecentChangesContentSkeleton from './RecentChangesContentSkeleton';
 import TagContentSkeleton from './TagContentSkeleton';
 
-export const SidebarSkeleton = (): JSX.Element => {
+export const SidebarSkeleton = memo(() => {
   const { t } = useTranslation();
   const { data: currentSidebarContents } = useCurrentSidebarContents();
 
@@ -45,4 +45,5 @@ export const SidebarSkeleton = (): JSX.Element => {
       <Contents />
     </div>
   );
-};
+});
+SidebarSkeleton.displayName = 'SidebarSkeleton';