can you create a UML diagram from the following javascript code: import React, $\{$useState$\}$ from 'react';

import $\{$View$,$ TextInput, Button, TouchableOpacity, StyleSheet,Text, ImageBackground$\}$ from 'react$-$native';

import $\{$ auth $\}$ from $\text{'}../$firebaseConfig$\text{'}$;

import $\{$ signInWithEmailAndPassword $\}$ from 'firebase$/$auth$\text{'}$;

import $\{$ useNavigation $\}$ from $\text{'}$@react$-$navigation$/$native$\text{'}$;

const Login$=()=>\{$

const $[$email$,$ setEmail$]=$ useState$(\text{'}\text{'})$;

const $[$password$,$ setPassword$]=$ useState$(\text{'}\text{'})$;

const navigation $=$ useNavigation$()$;

const handleLogin$=$ async$()=>\{$

if$(!$email $|!$password$)\{$

Alert.alert$(\text{'}$Error$\text{'},$'Please fill in all fields'$)$;

return;

$\}$

try $\{$

await signInWithEmailAndPassword$($auth$,$ email, password$)$;

console.error$(\text{'}$User signed in successfully!$\text{'})$;

$\}$ catch $($error$)\{$

console.error$(\text{'}$Not in the database', error.message$)$;

$\}$

$\}$;

const handleSignUp$=()=>\{$

navigation.navigate$(\text{'}$SignUp$\text{'})$;

$\}$

const buttonOpacity $=$ password && email $?1$ : $0\mathrm{.}5$;

return$($

Email

setEmail$($text$)\}$

value $=\{$email$\}$

$/>$

Password

setPassword$($text$)\}$

value $=\{$password$\}$

secureTextEntry$=\{$true$\}$

$/>$

LOGIN

Sign up

$)$;

$\}$;

const styles $=$ StyleSheet.create$(\{$

container:$\{$

flex: $1,$

justifyContent: 'center',

alignItems: 'center',

padding: $20,$

$\},$

input: $\{$

width: $\text{'}100\%\text{'},$

borderWidth: $1,$

borderColor: $\text{'}$#ccc$\text{'},$

padding: $10,$

marginBottom: $10,$

$\},$

loginbtn:$\{$

backgroundColor:'blue',

color:'white',

$\},$

button: $\{$

backgroundColor: $\text{'}$#$007$bff$\text{'},$

paddingVertical: $10,$

paddingHorizontal: $20,$

borderRadius: $5,$

$\},$

buttonText: $\{$

color: $\text{'}$#fff$\text{'},$

fontSize: $16,$

textAlign: 'center',

$\},$

$\})$;

export default Login;