Function cloneAndReplaceKey

code/controlled-uncontrolled/public/app.js:18199–18203

* Return a function that produces ReactElements of a given type. * See https://reactjs.org/docs/react-api.html#createfactory

(oldElement, newKey)

function cloneAndReplaceKey(oldElement, newKey) {
  var newElement = ReactElement(oldElement.type, newKey, oldElement.ref, oldElement._self, oldElement._source, oldElement._owner, oldElement.props);

  return newElement;
}

/**
 * Clone and return a new ReactElement using element as the starting point.