ant-design/components/card/Meta.tsx

import * as React from 'react';
import classNames from 'classnames';

export interface CardMetaProps {
  prefixCls?: string;
  style?: React.CSSProperties;
  className?: string;
  avatar?: React.ReactNode;
  title?: React.ReactNode;
  description?: React.ReactNode;
}

export default (props: CardMetaProps) => {
  const { prefixCls = 'ant-card', className, avatar, title, description, ...others } = props;
  const classString = classNames(`${prefixCls}-meta`, className);
  const avatarDom = avatar ? <div className={`${prefixCls}-meta-avatar`}>{avatar}</div> : null;
  const titleDom = title ? <div className={`${prefixCls}-meta-title`}>{title}</div> : null;
  const descriptionDom = description ?
      <div className={`${prefixCls}-meta-description`}>{description}</div> : null;
  const MetaDetail = titleDom || descriptionDom ?
    <div className={`${prefixCls}-meta-detail`}>
      {titleDom}
      {descriptionDom}
    </div> : null;
  return (
    <div {...others} className={classString}>
      {avatarDom}
      {MetaDetail}
    </div>
  );
};