Easy methods to begin React Native App in portrait orientation solely in each iOS and Android?

I wish to begin React Native app with Portrait orientation. At present I am utilizing the react-native-orientation-locker library to deal with the preliminary orientation. However it’s not working appropriately.

My App.js seems to be like this.

import Orientation from 'react-native-orientation-locker';

export const App = () => {
    useLayoutEffect(() => {
        Orientation.lockToPortrait();
    }, []);

    return (
        <RootContainer>
            <MyApp />
        </RootContainer>
    );
};

export default App;

I believe this must be dealt with from the native facet as a result of the JavaScript codes run after the preliminary course of. Perhaps I’ve so as to add a code MainApplication.java and AppDelegate.mm?