How to use the react-native-camera.default function in react-native-camera

import React, {Component} from 'react'
import {
	Platform,
	View,
	Text,
	TouchableHighlight,
	StyleSheet,
	Dimensions,
	Image,
	TouchableOpacity
} from 'react-native'
import Icon from 'react-native-vector-icons/Ionicons'

if (Platform.OS !== 'web') {
  var Camera = require('react-native-camera').default
}

import Spinner from '../components/base/Spinner'
import packageObj from '../../package.json'

const {height, width} = Dimensions.get('window')

class Login extends Component {
  _onLoginPress () {
    const {ui, router, actions} = this.props
    if (ui.checkTokenPending) { return }
    if (Platform.OS !== 'web') {
      Platform.OS === 'android' ? router.toQRCode() : Camera.checkDeviceAuthorizationStatus()
        .then((isAuth) => {
          if (isAuth) {
            router.toQRCode()

import React, {Component} from 'react'
import {StyleSheet, View, Text, Dimensions, Platform, TouchableOpacity, Vibration} from 'react-native'

if (Platform.OS !== 'web') {
  var Camera = require('react-native-camera').default
  var BarcodeScanner = require('react-native-barcodescanner')
}

import Icon from 'react-native-vector-icons/Ionicons'
import OverlayButton from '../components/base/OverlayButton'

const {height, width} = Dimensions.get('window')
const cameraSize = 250
const borderColor = 'rgba(255,255,255,0.6)'
const borderBoxSize = 35

class QRCode extends Component {
  constructor (props) {
    super(props)
    this.succesed = false
  }