content: import React from 'react';
  import PropTypes from 'prop-types';
  
  const FormField = () => (
    <span></span>
  );
  
  const formItemLayout = {
    labelCol: {
      lg: { span: 3 },
      xs: { span: 24 },
      sm: { span: 4 },
    },
    wrapperCol: {
      lg: { span: 6 },
      xs: { span: 24 },
      sm: { span: 12 },
    },
  };
  
  FormField.propTypes = {
    source: PropTypes.string.isRequired,
    input: PropTypes.element.isRequired,
    options: PropTypes.object,
    layoutSpan: PropTypes.object,
    format: PropTypes.func,
    parse: PropTypes.func,
  };
  
  FormField.defaultProps = {
    options: {},
    layoutSpan: formItemLayout,
    format: value => value,
    parse: value => value,
  };
  
  export default FormField;