text: import React from 'react';
  import PropTypes from 'prop-types';
  import classNames from 'classnames';
  import withStyles from '../styles/withStyles';
  import SvgIcon from '../SvgIcon';
  
  export const styles = theme => ({
    root: {
      color: theme.palette.text.disabled,
    },
    text: {
      fill: theme.palette.primary.contrastText,
      fontSize: theme.typography.caption.fontSize,
      fontFamily: theme.typography.fontFamily,
    },
  });
  
  /**
   * @ignore - internal component.
   */
  function StepPositionIcon(props) {
    const { position, classes, className } = props;
  
    return (
      <SvgIcon className={classNames(classes.root, className)}>
        <circle cx="12" cy="12" r="12" />
        <text className={classes.text} x="12" y="16" textAnchor="middle">
          {position}
        </text>
      </SvgIcon>
    );
  }
  
  StepPositionIcon.propTypes = {
    /**
     * Override or extend the styles applied to the component.
     * See [CSS API](#css-api) below for more details.
     */
    classes: PropTypes.object.isRequired,
    /**
     * @ignore
     */
    className: PropTypes.string,
    /**
     * The step position as a number.
     */
    position: PropTypes.node,
  };
  
  export default withStyles(styles)(StepPositionIcon);
  