With the react-native-h5mag framework, you can easily access H5mag public API

// App.js
import H5mag from 'react-native-h5mag';

H5mag.setApiKey('h5_public_Fn30x...Wvay2g');

const getProjectData = async () => {
	try {
		await getProjectAndEditions(projectDomain, { sort: true }).then((result) => {
			// Do something with the project data...
		});
	} catch (error) {
		console.error(error);
	}
};

const getProjectsData = async () => {
	try {
		const response = await getProjectsList({ filterByHasLatestEdition: true });
                // Do something with the projects data...
	} catch (error) {
		console.error(error);
	}
};

// You could get the **editionPath** and **projectDomain** through props.

const targetPath = (Platform.OS === 'android' ? DocumentDirectoryPath : MainBundlePath) + '/' + projectDomain + edition.path;
const charset = 'UTF-8';

const startEditionDownload = () => {
	downloadEdition(targetPath, charset, editionPath, projectDomain).then((result) => {
		if (result === 'downloaded') {
			// Do something after the edition has been downloaded....
		}
	}).catch((err) => {
		console.log(err);
	});
};

deleteEdition(targetPath).then((result) => {
	if (result === 'deleted') {
		// Do something after the deletion...
	}
});

const osPath = Platform.OS === 'android' ? DocumentDirectoryPath : MainBundlePath;

readEditionOffline(osPath, targetPath).then((result) => {
	if (result === 'success') {
                // Server is ready!
		// Update a state...
	}
});

if (readyToReadEdition) {
	return (<EditionReader targetPath={targetPath} />);
}