fix(647): fix error not thrown (#678)

Author: lojzatran

packages/platform-sdk/test/integration-tests/sdk-v3/error-cases.test.ts

@@ -0,0 +1,17 @@
+import { apiRootV3 } from '../test-utils'
+
+describe('testing error cases', () => {
+  it('should throw error when a product type is not found', async () => {
+    try {
+      await apiRootV3
+        .productTypes()
+        .withId({ ID: 'non-existing-id' })
+        .get()
+        .execute()
+
+      throw new Error('Should have thrown an error')
+    } catch (e) {
+      expect(e.statusCode).toEqual(404)
+    }
+  })
+})

packages/sdk-client-v3/src/client/client.ts

@@ -176,7 +176,13 @@ export default function createClient(middlewares: ClientOptions): Client {
           resolve,
           ...request,
         })
-          .then(resolve)
+          .then((res) => {
+            if (res.error) {
+              reject(res.error)
+            } else {
+              resolve(res)
+            }
+          })
           .catch(reject)
       })
     },