import { NavigationActions } from 'react-navigation';

let _navigator;

function setTopLevelNavigator(navigatorRef) {
     _navigator = navigatorRef;
}

function navigate(routeName, params) {
     _navigator.dispatch(
          NavigationActions.navigate({
               routeName,
               params,
          })
     );
}

// add other navigation functions that you need and export them

export default {
     navigate,
     setTopLevelNavigator,
};