function cloneWithProps(child, props) {
  if ("development" !== 'production') {
    "development" !== 'production' ? warning(didDeprecatedWarn, 'cloneWithProps(...) is deprecated. ' + 'Please use React.cloneElement instead.') : undefined;
    didDeprecatedWarn = true;
    "development" !== 'production' ? warning(!child.ref, 'You are calling cloneWithProps() on a child with a ref. This is ' + 'dangerous because you\'re creating a new child which will not be ' + 'added as a ref to its parent.') : undefined;
  }

  var newProps = ReactPropTransferer.mergeProps(props, child.props);

  // Use `child.props.children` if it is provided.
  if (!newProps.hasOwnProperty(CHILDREN_PROP) && child.props.hasOwnProperty(CHILDREN_PROP)) {
    newProps.children = child.props.children;
  }

  // The current API doesn't retain _owner, which is why this
  // doesn't use ReactElement.cloneAndReplaceProps.
  return ReactElement.createElement(child.type, newProps);
}
Sometimes you want to change the props of a child passed to you. Usually
this is to add a CSS class.

@param {ReactElement} child child element you'd like to clone
@param {object} props props you'd like to modify. className and style will be
merged automatically.
@return {ReactElement} a clone of child with props merged in.
@deprecated