add doc sidebar

src/theme/DocSidebar/index.js

@@ -0,0 +1,19 @@
+import React from 'react';
+import {useWindowSize} from '@docusaurus/theme-common';
+import DocSidebarDesktop from '@theme/DocSidebar/Desktop';
+import DocSidebarMobile from '@theme/DocSidebar/Mobile';
+export default function DocSidebar(props) {
+  const windowSize = useWindowSize();
+  // Desktop sidebar visible on hydration: need SSR rendering
+  const shouldRenderSidebarDesktop =
+    windowSize === 'desktop' || windowSize === 'ssr';
+  // Mobile sidebar not visible on hydration: can avoid SSR rendering
+  const shouldRenderSidebarMobile = windowSize === 'mobile';
+  return (
+    <>
+      {shouldRenderSidebarDesktop && <DocSidebarDesktop {...props} />}
+      {shouldRenderSidebarMobile && <DocSidebarMobile {...props} />}
+      {/*<DocSidebarMobile {...props} />*/}
+    </>
+  );
+}