fix: update error handling to use errorInfo instead of cause for login errors

Author: amitsingh05667

src/web-auth/hosted-pages.js

@@ -128,7 +128,7 @@ HostedPages.prototype.signupAndLogin = function(options, cb) {
     }
     return _this.login(options, function(loginErr, result) {
       if (loginErr) {
-        loginErr.cause = {
+        loginErr.errorInfo = {
           error_code: 'login_error',
           message: 'Your account was created successfully, but we could not log you in automatically. Please try logging in with your new credentials.'
         };

src/web-auth/popup.js

@@ -327,7 +327,7 @@ Popup.prototype.signupAndLogin = function(options, cb) {
     }
     _this.loginWithCredentials(options, function(loginErr, result) {
       if (loginErr) {
-        loginErr.cause = {
+        loginErr.errorInfo = {
           error_code: 'login_error',
           message: 'Your account was created successfully, but we could not log you in automatically. Please try logging in with your new credentials.'
         };

src/web-auth/redirect.js

@@ -66,7 +66,7 @@ Redirect.prototype.signupAndLogin = function (options, cb) {
 
     return _this.webAuth.login(options, function (loginErr, result) {
       if (loginErr) {
-        loginErr.cause = {
+        loginErr.errorInfo = {
           error_code: 'login_error',
           message: 'Your account was created successfully, but we could not log you in automatically. Please try logging in with your new credentials.'
         };

test/web-auth/hosted-pages.test.js

@@ -391,7 +391,7 @@ describe('auth0.WebAuth._universalLogin', function() {
           expect(data).to.be(undefined);
           expect(err.code).to.be('invalid_user_password');
           expect(err.description).to.be('Wrong email or password.');
-          expect(err.cause).to.eql({
+          expect(err.errorInfo).to.eql({
             error_code: 'login_error',
             message: 'Your account was created successfully, but we could not log you in automatically. Please try logging in with your new credentials.'
           });

test/web-auth/popup.test.js

@@ -816,7 +816,7 @@ describe('auth0.WebAuth.popup', function() {
           expect(data).to.be(undefined);
           expect(err.code).to.be('invalid_user_password');
           expect(err.description).to.be('Wrong email or password.');
-          expect(err.cause).to.eql({
+          expect(err.errorInfo).to.eql({
             error_code: 'login_error',
             message: 'Your account was created successfully, but we could not log you in automatically. Please try logging in with your new credentials.'
           });

test/web-auth/redirect.test.js

@@ -301,7 +301,7 @@ describe('auth0.WebAuth.redirect', function() {
           expect(data).to.be(undefined);
           expect(err.code).to.be('invalid_user_password');
           expect(err.description).to.be('Wrong email or password.');
-          expect(err.cause).to.eql({
+          expect(err.errorInfo).to.eql({
             error_code: 'login_error',
             message: 'Your account was created successfully, but we could not log you in automatically. Please try logging in with your new credentials.'
           });