HomeScreen.tsx

// ... imports
import { Icon } from "react-native-elements";
// You only need NavigationScreenProps for TypeScript
import { NavigationScreenProps } from "react-navigation";

class HomeScreen extends Component {
  static navigationOptions = ({ navigation }: NavigationScreenProps) => ({
    headerTitle: "Home",
    headerLeft: Platform.select({
      ios: null,
      android: (
        <Icon
          name="md-menu"
          type="ionicon"
          containerStyle={styles.icon}
          onPress={() => navigation.toggleDrawer()}
        />
      )
    })
  });
  // ... rest of the component