ant-design/components/skeleton/Element.tsx

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

export interface SkeletonElementProps {
  prefixCls?: string;
  className?: string;
  style?: object;
  size?: 'large' | 'small' | 'default' | number;
  shape?: 'circle' | 'square' | 'round';
  active?: boolean;
}

const Element = (props: SkeletonElementProps) => {
  const { prefixCls, className, style, size, shape } = props;

  const sizeCls = classNames({
    [`${prefixCls}-lg`]: size === 'large',
    [`${prefixCls}-sm`]: size === 'small',
  });

  const shapeCls = classNames({
    [`${prefixCls}-circle`]: shape === 'circle',
    [`${prefixCls}-square`]: shape === 'square',
    [`${prefixCls}-round`]: shape === 'round',
  });

  const sizeStyle: React.CSSProperties =
    typeof size === 'number'
      ? {
          width: size,
          height: size,
          lineHeight: `${size}px`,
        }
      : {};

  return (
    <span
      className={classNames(prefixCls, sizeCls, shapeCls, className)}
      style={{ ...sizeStyle, ...style }}
    />
  );
};

export default Element;