ant-design/components/menu/demo/switch-mode.tsx

import React, { useState } from 'react';
import {
  AppstoreOutlined,
  CalendarOutlined,
  LinkOutlined,
  MailOutlined,
  SettingOutlined,
} from '@ant-design/icons';
import { Divider, Menu, Switch } from 'antd';
import type { GetProp, MenuProps } from 'antd';

type MenuTheme = GetProp<MenuProps, 'theme'>;
type MenuItem = GetProp<MenuProps, 'items'>[number];

function getItem(
  label: React.ReactNode,
  key?: React.Key | null,
  icon?: React.ReactNode,
  children?: MenuItem[],
): MenuItem {
  return {
    key,
    icon,
    children,
    label,
  } as MenuItem;
}

const items: MenuItem[] = [
  getItem('Navigation One', '1', <MailOutlined />),
  getItem('Navigation Two', '2', <CalendarOutlined />),
  getItem('Navigation Two', 'sub1', <AppstoreOutlined />, [
    getItem('Option 3', '3'),
    getItem('Option 4', '4'),
    getItem('Submenu', 'sub1-2', null, [getItem('Option 5', '5'), getItem('Option 6', '6')]),
  ]),
  getItem('Navigation Three', 'sub2', <SettingOutlined />, [
    getItem('Option 7', '7'),
    getItem('Option 8', '8'),
    getItem('Option 9', '9'),
    getItem('Option 10', '10'),
  ]),
  getItem(
    <a href="https://ant.design" target="_blank" rel="noopener noreferrer">
      Ant Design
    </a>,
    'link',
    <LinkOutlined />,
  ),
];

const App: React.FC = () => {
  const [mode, setMode] = useState<'vertical' | 'inline'>('inline');
  const [theme, setTheme] = useState<MenuTheme>('light');

  const changeMode = (value: boolean) => {
    setMode(value ? 'vertical' : 'inline');
  };

  const changeTheme = (value: boolean) => {
    setTheme(value ? 'dark' : 'light');
  };

  return (
    <>
      <Switch onChange={changeMode} /> Change Mode
      <Divider type="vertical" />
      <Switch onChange={changeTheme} /> Change Style
      <br />
      <br />
      <Menu
        style={{ width: 256 }}
        defaultSelectedKeys={['1']}
        defaultOpenKeys={['sub1']}
        mode={mode}
        theme={theme}
        items={items}
      />
    </>
  );
};

export default App;