ant-design/site/theme/template/Layout/Header/More.tsx

import * as React from 'react';
import { Dropdown, Menu, Button } from 'antd';
import { FormattedMessage } from 'react-intl';
import { DownOutlined } from '@ant-design/icons';
import { SharedProps } from './interface';

export function getEcosystemGroup({ isZhCN }: SharedProps): React.ReactElement {
  return (
    <Menu.ItemGroup key="ecosystem" title={<FormattedMessage id="app.header.menu.ecosystem" />}>
      <Menu.Item key="pro">
        <a
          href="http://pro.ant.design"
          className="header-link"
          target="_blank"
          rel="noopener noreferrer"
        >
          <FormattedMessage id="app.header.menu.pro.v4" />
        </a>
      </Menu.Item>
      <Menu.Item key="ng">
        <a
          href="http://ng.ant.design"
          className="header-link"
          target="_blank"
          rel="noopener noreferrer"
        >
          Ant Design of Angular
        </a>
      </Menu.Item>
      <Menu.Item key="vue">
        <a
          href="http://vue.ant.design"
          className="header-link"
          target="_blank"
          rel="noopener noreferrer"
        >
          Ant Design of Vue
        </a>
      </Menu.Item>
      {isZhCN ? (
        <Menu.Item key="course" className="hide-in-home-page">
          <a
            href="https://www.yuque.com/ant-design/course"
            className="header-link"
            target="_blank"
            rel="noopener noreferrer"
          >
            Ant Design 实战教程
          </a>
        </Menu.Item>
      ) : null}
    </Menu.ItemGroup>
  );
}

export default (props: SharedProps) => {
  const menu = <Menu>{getEcosystemGroup(props)}</Menu>;
  const DownStyle = props.isRTL ? '-1px 2px 0 0' : '-1px 0 0 2px';
  return (
    <Dropdown overlay={menu} placement="bottomRight">
      <Button size="small" className="header-button">
        <FormattedMessage id="app.header.menu.more" />
        <DownOutlined
          style={{
            fontSize: '9px',
            margin: DownStyle,
            verticalAlign: 'middle',
          }}
        />
      </Button>
    </Dropdown>
  );
};