React Navigation check if previous screen exists

Question

I am looking desperately for a possibility to check if a previous screen exists in ReactNavigation.

Using this.props.navigation.goBack() returns

Answer 1

const navigateAction = NavigationActions.navigate({
  routeName: 'NEXT_SCREEN',
  action: NavigationActions.navigate({ routeName: 'NEXT_SCREEN', params: { previous_screen: 'CURRENT_SCREEN' } }),
});
this.props.navigation.dispatch(navigateAction);