fix nested relationships w/o ids

Author: nicosefer

src/index.ts

@@ -72,6 +72,9 @@ export const JSONAPIDeserializer = {
     resource: JSONApiResource,
     resolvedMap: T
   ): T[K] {
+    if (!resource.id || !resource.type) {
+      return;
+    }
     const key = `${resource.id}-${resource.type}`;
 
     return get(resolvedMap, key);
@@ -87,7 +90,6 @@ export const JSONAPIDeserializer = {
     const type = data.type;
 
     const resolvedItem = this.getResolvedItem(data, resolvedMap);
-
     if (resolvedItem) {
       return resolvedItem;
     }

tests/index.test.ts

@@ -1,5 +1,36 @@
 import { JSONAPIDeserializer, JSONAPISerializer } from "../src";
 
+test("JSONAPIDeserializer:compound relationships w/o ids", async () => {
+  var jsonapiResponse = {
+    data: {
+      type: "email-lists",
+      relationships: {
+        emails: {
+          data: [
+            {
+              type: "emails",
+              attributes: {
+                email: "email-1@mail.com",
+              },
+            },
+            {
+              type: "emails",
+              attributes: {
+                email: "email-2@mail.com",
+              },
+            },
+          ],
+        },
+      },
+    },
+  };
+
+  // @ts-ignore @todo check this type
+  const output = JSONAPIDeserializer.deserialize(jsonapiResponse);
+  expect(output.data.emails[0].email).toEqual("email-1@mail.com");
+  expect(output.data.emails[1].email).toEqual("email-2@mail.com");
+});
+
 test("JSONAPIDeserializer:basic attributes", async () => {
   const jsonapiResponse = {
     data: {