app/chat/layout.tsx

import ChatSidebarList from '@/components/chat-sidebar/ChatListSidebar';
import Loading from '@/components/ui/Loading';
import { Suspense } from 'react';

interface ChatLayoutProps {
  children: React.ReactNode;
}

export default async function Layout({ children }: ChatLayoutProps) {
  return (
    <div className="relative flex h-[calc(100vh_-_theme(spacing.16))] overflow-hidden">
      <div
        data-state="open"
        className="peer absolute inset-y-0 z-30 hidden border-r bg-muted duration-300 ease-in-out translate-x-0 lg:flex lg:w-[250px] h-full flex-col dark:bg-zinc-950 overflow-auto py-2"
      >
        <Suspense fallback={<Loading />}>
          <ChatSidebarList />
        </Suspense>
      </div>
      <Suspense fallback={<Loading />}>
        <div className="group w-full overflow-auto pl-0 animate-in duration-300 ease-in-out peer-[[data-state=open]]:lg:pl-[250px]">
          {children}
        </div>
      </Suspense>
    </div>
  );
}