How to tel which env you are on with react native and react native web

common.js

import { Platform } from 'react-native';

const isWeb = Platform.OS === 'web';
const isNative = !isWeb;
const isIos = Platform.OS === 'ios';
const isAndroid = Platform.OS === 'android';
const isDesktop = isWeb && typeof matchMedia !== 'undefined' && matchMedia('(min-width: 768px)').matches;
const isMobile = !isDesktop;