react-native-status-bar-height/index.js

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

const STATUSBAR_DEFAULT_HEIGHT = 20;
const STATUSBAR_X_HEIGHT = 44;
const STATUSBAR_IP12_HEIGHT = 47;
const STATUSBAR_IP12MAX_HEIGHT = 47;

const X_WIDTH = 375;
const X_HEIGHT = 812;

const XSMAX_WIDTH = 414;
const XSMAX_HEIGHT = 896;

const IP12_WIDTH = 390;
const IP12_HEIGHT = 844;

const IP12MAX_WIDTH = 428;
const IP12MAX_HEIGHT = 926;

const { height: W_HEIGHT, width: W_WIDTH } = Dimensions.get('window');

let statusBarHeight = STATUSBAR_DEFAULT_HEIGHT;
let isIPhoneX_v = false;
let isIPhoneXMax_v = false;
let isIPhone12_v = false;
let isIPhone12Max_v = false;
let isIPhoneWithMonobrow_v = false;

if (Platform.OS === 'ios' && !Platform.isPad && !Platform.isTVOS) {
    if (W_WIDTH === X_WIDTH && W_HEIGHT === X_HEIGHT) {
        isIPhoneWithMonobrow_v = true;
        isIPhoneX_v = true;
        statusBarHeight = STATUSBAR_X_HEIGHT;
    } else if (W_WIDTH === XSMAX_WIDTH && W_HEIGHT === XSMAX_HEIGHT) {
        isIPhoneWithMonobrow_v = true;
        isIPhoneXMax_v = true;
        statusBarHeight = STATUSBAR_X_HEIGHT;
    } else if (W_WIDTH === IP12_WIDTH && W_HEIGHT === IP12_HEIGHT) {
        isIPhoneWithMonobrow_v = true;
        isIPhone12_v = true;
        statusBarHeight = STATUSBAR_IP12_HEIGHT;
    } else if (W_WIDTH === IP12MAX_WIDTH && W_HEIGHT === IP12MAX_HEIGHT) {
        isIPhoneWithMonobrow_v = true;
        isIPhone12Max_v = true;
        statusBarHeight = STATUSBAR_IP12MAX_HEIGHT;
    }
}

export const isIPhoneX = () =>  isIPhoneX_v;
export const isIPhoneXMax = () =>  isIPhoneXMax_v;
export const isIPhone12 = () =>  isIPhone12_v;
export const isIPhone12Max = () =>  isIPhone12Max_v;
export const isIPhoneWithMonobrow = () => isIPhoneWithMonobrow_v;

const getExpoRoot = () => global.Expo || global.__expo || global.__exponent;

export const isExpo = () => getExpoRoot() !== undefined;

export function getStatusBarHeight(skipAndroid) {
    return Platform.select({
        ios: statusBarHeight,
        android: skipAndroid ? 0 : StatusBar.currentHeight,
        default: 0
    })
}