Exploring the StackNavigationProps and Screen properties in react-navigation v5 for Typescript

When dealing with defining types for a screen's navigation prop in a different file than the router, what is the most effective approach? For example, if I have one file where routes are defined:

//Router.tsx

type RootStackParamList = {
  Home: undefined;
  Profile: undefined;
}

const Stack = createStackNavigator<RootStackParamList>();

// Component rendering navigator
const Router = () => {
   .
   .
   .
}

And then a separate file for the screen:

// Home.tsx


// Should we duplicate the RootStackParamList here,
// which was already defined in Router.tsx?
type = HomeScreenNavigationProp = StackNavigationProp<
  RootStackParamList,
  "Home"
>;

type Props: {
  navigation: HomeScreenNavigationProp
}


const Home = ({navigation}: Props) => {
  .
  .
  .
}

Should I repeatedly copy the RootStackParamList to every screen or create a shared types.ts file and import it from there? Is there a more efficient way to manage this, considering that navigation is used frequently across components?

Answer №1

Give this a shot:

type RootStackComponent<RouteName extends keyof RootStackParamList> = React.FC<{
  navigation: StackNavigationProp<RootStackParamList, RouteName>,
  route: RouteProp<RootStackParamList, RouteName>
}>
const HomePanel: RootStackComponent<'HomePanel'> = ({ navigation, route }) => {}

Answer №2

To begin, establish your createStackNavigator type in the following manner:

export type MainStackParamList = {
     Profile: undefined;
     Settings: undefined;
     Dashboard: undefined;
};
const Stack = createStackNavigator<MainStackParamList>();

Next, navigate to the Profile.tsx component and insert this line of code:

type Props = StackScreenProps<MainStackParamList, 'Profile'>;

const Profile = ({navigation, route}: Props) => {
 .
 .
 . 
} 

Check out more information here: https://reactnavigation.org/docs/typescript/

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