1	const doUserSignUp = async function () {
2	  // Note that these values come from state variables that we've declared before
3	  const usernameValue = username;
4	  const passwordValue = password;
5	  const emailValue = email;
6	  // Since the signUp method returns a Promise, we need to call it using await
7	  // Note that now you are setting the user email value as well
8	  return await Parse.User.signUp(usernameValue, passwordValue, {
9	    email: emailValue,
10	  })
11	    .then(async (createdUser) => {
12	      // Parse.User.signUp returns the already created ParseUser object if successful
13	      Alert.alert(
14	        'Success!',
15	        `User ${createdUser.get(
16	          'username',
17	        )} was successfully created! Verify your email to login`,
18	      );
19	      // Since email verification is now required, make sure to log out
20	      // the new user, so any Session created is cleared and the user can
21	      // safely log in again after verifying
22	      await Parse.User.logOut();
23	      // Go back to the login page
24	      navigation.dispatch(StackActions.popToTop());
25	      return true;
26	    })
27	    .catch((error) => {
28	      // signUp can fail if any parameter is blank or failed an uniqueness check on the server
29	      Alert.alert('Error!', error.message);
30	      return false;
31	    });
32	};

1	const doUserLogIn = async function () {
2	  // Note that these values come from state variables that we've declared before
3	  const usernameValue = username;
4	  const passwordValue = password;
5	  return await Parse.User.logIn(usernameValue, passwordValue)
6	    .then(async (loggedInUser) => {
7	      // logIn will throw an error if the user is not verified yet,
8	      // but it's safer to check again after login
9	      if (loggedInUser.get('emailVerified') === true) {
10	        Alert.alert(
11	          'Success!',
12	          `User ${loggedInUser.get('username')} has successfully signed in!`,
13	        );
14	        // Verify this is in fact the current user
15	        const currentUser = await Parse.User.currentAsync();
16	        console.log(loggedInUser === currentUser);
17	        // Navigation.navigate takes the user to the home screen
18	        navigation.navigate('Home');
19	        return true;
20	      } else {
21	        await Parse.User.logOut();
22	        return false;
23	      }
24	    })
25	    .catch((error) => {
26	      // Error can be caused by wrong parameters or lack of Internet connection.
27	      // A non-verified user will also cause an error
28	      Alert.alert('Error!', error.message);
29	      return false;
30	    });
31	};