import * as React from 'react' ; import { createStackNavigator } from '@react-navigation/stack' ; import { AuthenticationStoryboardParamList } from '@storyboards' ; import { SignIn } from '@containers' ; const Stack = createStackNavigator < AuthenticationStoryboardParamList > ( ) ; export const AuthenticationNavigator = ( ) => { return ( < Stack . Navigator headerMode = "none" initialRouteName = { 'SignUp' } > < Stack . Screen name = "SignIn" component = { SignIn } / > < /Stack.Navigator>); } ;