ant-design/components/button/demo/icon.tsx

import React from 'react';
import { SearchOutlined } from '@ant-design/icons';
import { Button, Tooltip, Space } from 'antd';

const App: React.FC = () => (
  <Space direction="vertical">
    <Space wrap>
      <Tooltip title="search">
        <Button type="primary" shape="circle" icon={<SearchOutlined />} />
      </Tooltip>
      <Button type="primary" shape="circle">
        A
      </Button>
      <Button type="primary" icon={<SearchOutlined />}>
        Search
      </Button>
      <Tooltip title="search">
        <Button shape="circle" icon={<SearchOutlined />} />
      </Tooltip>
      <Button icon={<SearchOutlined />}>Search</Button>
    </Space>
    <Space wrap>
      <Tooltip title="search">
        <Button shape="circle" icon={<SearchOutlined />} />
      </Tooltip>
      <Button icon={<SearchOutlined />}>Search</Button>
      <Tooltip title="search">
        <Button type="dashed" shape="circle" icon={<SearchOutlined />} />
      </Tooltip>
      <Button type="dashed" icon={<SearchOutlined />}>
        Search
      </Button>
      <Button icon={<SearchOutlined />} href="https://www.google.com" />
    </Space>
  </Space>
);

export default App;