message: Typed parameters
diff: @@ -16,7 +16,7 @@ class Scene extends React.Component<NavigationMotionProps, NavigationMotionState
  static defaultProps = {
  crumb: 0,
  tab: 0,
  - renderScene: (state, data) => state.renderScene(data)
  + renderScene: (state: State, data: any) => state.renderScene(data)
  }
  static getDerivedStateFromProps(props: NavigationMotionProps) {
  var {crumb, navigationEvent} = props;
  