message: Replaced ternary with &&
diff: @@ -26,7 +26,7 @@ class NavigationMotion extends React.Component<NavigationMotionProps, Navigation
  }
  var {navigationEvent, stateNavigator} = this.props;
  var {state, crumbs} = stateNavigator.stateContext;
  - this.state = {scenes: {[crumbs.length]: state ? navigationEvent : null }, rest: false};
  + this.state = {scenes: {[crumbs.length]: state && navigationEvent}, rest: false};
  }
  static defaultProps = {
  duration: 300
  