Ceretean

const AppNavigator = createBottomTabNavigator({
  RootScreenA: {
    screen: createStackNavigator({
      ChildScreenA: {
        screen: ChildScreenA,
      },
      ChildScreenB: {
        screen: ChildScreenA,
      },
    }),
  },
  RootScreenB: {
    screen: createStackNavigator({
      ChildScreenA: {
        screen: ChildScreenA,
      },
      ChildScreenC: {
        screen: ChildScreenC,
      },
    }),
  },
  RootScreenC: {
    screen: createStackNavigator({
      ChildScreenD: {
        screen: ChildScreenD,
      },
      ChildScreenE: {
        screen: ChildScreenE,
      },
    }),
  },
});
const App = createAppContainer(AppNavigator);