ant-design/components/badge/demo/overflow.tsx

import React from 'react';
import { Avatar, Badge, Space } from 'antd';

const App: React.FC = () => (
  <Space size="large">
    <Badge count={99}>
      <Avatar shape="square" size="large" />
    </Badge>
    <Badge count={100}>
      <Avatar shape="square" size="large" />
    </Badge>
    <Badge count={99} overflowCount={10}>
      <Avatar shape="square" size="large" />
    </Badge>
    <Badge count={1000} overflowCount={999}>
      <Avatar shape="square" size="large" />
    </Badge>
  </Space>
);

export default App;