Removed 1 redirect and added loader on storefront login page in LoginAsCustomer

Author: ihorvansach

app/code/Magento/LoginAsCustomerUi/Controller/Login/Index.php

@@ -127,7 +127,9 @@ public function execute(): ResultInterface
             $this->messageManager->addSuccessMessage(
                 __('You are logged in as customer: %1', $customer->getFirstname() . ' ' . $customer->getLastname())
             );
-            $resultRedirect->setPath('*/*/proceed');
+            $resultPage = $this->resultFactory->create(ResultFactory::TYPE_PAGE);
+            $resultPage->getConfig()->getTitle()->set(__('You are logged in'));
+            return $this->resultFactory->create(ResultFactory::TYPE_PAGE);
 
         } catch (LocalizedException $e) {
             $this->messageManager->addErrorMessage($e->getMessage());

app/code/Magento/LoginAsCustomerUi/Controller/Login/Proceed.php

@@ -4,13 +4,15 @@
  */
 
 define([
+    'jquery',
     'Magento_Customer/js/customer-data',
     'Magento_Customer/js/section-config'
-], function (customerData, sectionConfig) {
+], function ($, customerData, sectionConfig) {
 
     'use strict';
 
     return function (config) {
+        $('body').trigger('processStart');
         customerData.reload(sectionConfig.getSectionNames()).done(function () {
             window.location.href = config.redirectUrl;
         });