react-native 判断是不是IPhone X

import {
    Platform,
    Dimensions
} from 'react-native';  

// iPhoneX
const X_WIDTH = 375;
const X_HEIGHT = 812;  

// screen
const SCREEN_WIDTH = Dimensions.get('window').width;
const SCREEN_HEIGHT = Dimensions.get('window').height;  

export default function isIphoneX() {
    return (
        Platform.OS === 'ios' &&
        ((SCREEN_HEIGHT === X_HEIGHT && SCREEN_WIDTH === X_WIDTH) ||
        (SCREEN_HEIGHT === X_WIDTH && SCREEN_WIDTH === X_HEIGHT))
    )
}