DefinitelyTyped/types/react-native-easy-upgrade/react-native-easy-upgrade-tests.ts

import RNEasyUpgrade from 'react-native-easy-upgrade';
import { Alert, Platform } from 'react-native';

const isAndroid = Platform.OS === 'android';

const easyUpgrade = new RNEasyUpgrade({
	iOSAppId: '12345678',
	downloadTitle: 'Download package',
	downloadDescription: 'Packing downloading...',
	downloadApkEnd: () => {
		// eg: install apk
		easyUpgrade.installApk();
	},
	onError: () => {
		console.log('downloadApkError');
	}
});

async function getUpdateInfo() {
	const updateInfo = {
		latestVersion: '3.0.0',
		hasNewVersion: true,
		apkUrl: 'http://{remoteApkDownloadUrl}'
	};
	if (isAndroid) {
		try {
			const resp = await fetch('http://{remoteUrl}/updateInfo.json');
			return await resp.json();
		} catch (error) {
			return updateInfo;
		}
	} else {
		return easyUpgrade.checkAppVersionIOS();
	}
}

async function startUpgrade() {
	const updateInfo = await getUpdateInfo();
	if (updateInfo.hasNewVersion) {
		Alert.alert(
			'Find a new version: ' + updateInfo.latestVersion,
			'Whether to upgrade app?',
			[
				{ text: 'Ask me later', onPress: () => console.log('Ask me later pressed') },
				{
					text: 'Upgrade', onPress: () => {
						easyUpgrade.startAppUpdate(updateInfo.apkUrl);
					}
				},
			],
		);
	}
}