Merge branch 'develop' of https://github.com/Adyen/adyen-magento2 into develop

Model/AdyenThreeDS2Process.php

@@ -97,7 +97,6 @@ class AdyenThreeDS2Process implements AdyenThreeDS2ProcessInterface
         try {
             $client = $this->adyenHelper->initializeAdyenClient($quote->getStoreId());
             $service = $this->adyenHelper->createAdyenCheckoutService($client);
-            $requestOptions['idempotencyKey'] = $quote->reserveOrderId()->getReservedOrderId();
 
             $result = $service->paymentsDetails($request);
         } catch (\Adyen\AdyenException $e) {

Model/Api/PaymentRequest.php

@@ -118,8 +118,7 @@ class PaymentRequest extends DataObject
         try {
             $client = $this->_adyenHelper->initializeAdyenClient($storeId);
             $service = $this->_adyenHelper->createAdyenCheckoutService($client);
-            $requestOptions['idempotencyKey'] = $order->getIncrementId();
-            $result = $service->paymentsDetails($request, $requestOptions);
+            $result = $service->paymentsDetails($request);
         } catch (\Adyen\AdyenException $e) {
             throw new \Magento\Framework\Exception\LocalizedException(__('3D secure failed'));
         }

view/frontend/web/js/model/adyen-payment-service.js

@@ -32,7 +32,7 @@ define(
             /**
              * Retrieve the list of available payment methods from the server
              */
-            retrieveAvailablePaymentMethods: function (callback = null) {
+            retrieveAvailablePaymentMethods: function (callback) {
                 var self = this;
 
                 // retrieve payment methods
@@ -56,7 +56,7 @@ define(
                 ).done(
                     function (response) {
                         self.setPaymentMethods(response);
-                        if (callback !== null) {
+                        if (callback) {
                             callback();
                         }
                     }