AWS Amplify with MobX in React Native

amplifyGist.tsx

import { createAppContainer, createSwitchNavigator } from 'react-navigation';
import UserNotAuthorized from './src/screens/UserNotAuthorized/UserNotAuthorized';
import DisclaimerScreen from './src/screens/DisclaimerScreen/DisclaimerScreen';
import React from 'react';
import { withAuthenticator } from 'aws-amplify-react-native';
import { Auth } from 'aws-amplify';
import { action, observable, reaction } from 'mobx';
import { Props, State } from './src/boot/setup';
import { Provider } from 'mobx-react/native';

const AppNavigator = createSwitchNavigator({
	Screen1: Screen1,
	Screen2: Screen2,
	Screen3: Screen3,
	Screen4: Screen4
});

//InnerApp.js
export default props => {
	const AppComponent = withAuthenticator(createAppContainer(AppNavigator));
	return <AppComponent {...props} />;
};

//App.js
class App extends React.Component<Props, State> {
	constructor(props) {
		super(props);

		this.reloadDisposer = reaction(
			() => stores.userStore.rerender,
			rerender => {
				if (rerender) {
					this.rerender();
					stores.userStore.rerender = false;
				}
			}
		);
	}

	componentWillUnmount(): void {
		this.reloadDisposer();
	}

	rerender = () => this.forceUpdate();

	render() {
		return (
			<Provider {...stores}>
				<InnerApp />
			</Provider>
		);
	}
}

//MobX store
export class UserStore {
	@observable rerender: boolean = false;

	@action
	reloadApp() {
		this.rerender = true;
	}

	logout() {
		Auth.signOut().then(() => this.reloadApp());
	}
}

This a non-working example of how I used MobX in React Native.
In this example, I needed to implement a sign out flow. Since I'm rendering the entire app embedded inside withAuthentication HOC, the only way to navigate back to aws-amplify Sign In page is to reload the app.
So, signing out sets an @observable variable to true (rerender, owned by UserStore).
Inside the root component (App.js), I've armed a MobX reaction to listen to changes on that parameter, forcing the app to render and setting the variable back. This flow is inspired by @dabit3 answer to a github issue.

Feel free to comment.