feat(payment): PAYPAL-4937 updated interface

Author: bc-nick

packages/core/src/payment/headless-payment-method-response.ts

@@ -1,7 +1,7 @@
 import HeadlessPaymentMethod from './headless-payment-method';
 
-export interface HeadlessPaymentMethodResponse<T = any> {
+export interface HeadlessPaymentMethodResponse {
     data: {
-        site: HeadlessPaymentMethod<T>;
+        site: HeadlessPaymentMethod;
     };
 }

packages/core/src/payment/headless-payment-method.ts

@@ -1,6 +1,7 @@
-export default interface HeadlessPaymentMethod<T = any> {
+export default interface HeadlessPaymentMethod {
     paymentWalletWithInitializationData: {
         clientToken?: string;
-        initializationData?: T;
+        // INFO:: initializationData given in base64 format
+        initializationData?: string;
     };
 }

packages/core/src/payment/payment-method-request-sender.ts

@@ -82,7 +82,7 @@ export default class PaymentMethodRequestSender {
         };
 
         return this._requestSender
-            .post<HeadlessPaymentMethodResponse<string>>(url, requestOptions)
+            .post<HeadlessPaymentMethodResponse>(url, requestOptions)
             .then((response) => this.transformToPaymentMethodResponse(response, methodId));
     }
 
@@ -93,18 +93,20 @@ export default class PaymentMethodRequestSender {
         const {
             body: {
                 data: {
-                    site: { paymentWalletWithInitializationData },
+                    site: {
+                        paymentWalletWithInitializationData: { clientToken, initializationData },
+                    },
                 },
             },
         } = response;
 
         return {
             ...response,
             body: {
-                initializationData: JSON.parse(
-                    atob(paymentWalletWithInitializationData.initializationData),
-                ),
-                clientToken: paymentWalletWithInitializationData.clientToken,
+                initializationData: initializationData
+                    ? JSON.parse(atob(initializationData))
+                    : null,
+                clientToken,
                 id: methodId,
                 config: {},
                 method: '',