Add test for issue #196

package.json

@@ -56,6 +56,7 @@
     "url": "https://github.com/blitz-js/superjson"
   },
   "devDependencies": {
+    "@tanstack/query-core": "^4.2.2",
     "@types/debug": "^4.1.5",
     "@types/mongodb": "^3.6.12",
     "benchmark": "^2.1.4",

src/index.test.ts

@@ -14,6 +14,7 @@ import {
 
 import { ObjectID } from 'mongodb';
 import { Decimal } from 'decimal.js';
+import { dehydrate, QueryClient } from '@tanstack/query-core';
 
 const isNode10 = process.version.indexOf('v10') === 0;
 
@@ -1001,6 +1002,64 @@ test('regression: `Object.create(null)` / object without prototype', () => {
   expect(parsed.date).toBeInstanceOf(Date);
 });
 
+describe("ReactQuery. Issue #196: TypeError: Cannot read property 'queries' of undefined", () => {
+  it('works with an empty dehydrated QueryClient', () => {
+    const queryClient = new QueryClient();
+    const input = { props: { dehydratedState: dehydrate(queryClient) } };
+
+    const stringified = SuperJSON.stringify(input);
+    const parsed: any = SuperJSON.parse(stringified);
+
+    expect(parsed).toEqual(input);
+  });
+
+  const template = {
+    id: 'cl6mlkijv00000glajl1xljzl',
+    label: 'foo',
+    ownerId: 'cl6cdyozp0007jbul3o4oqoox',
+    createdAt: new Date('2022-08-09T19:50:25.003Z'),
+    updatedAt: new Date('2022-08-09T19:50:25.019Z'),
+    fields: [
+      {
+        id: 'cl6mlkik800010glagppvr24i',
+        label: 'Property',
+        type: 'NUMBER',
+        templateId: 'cl6mlkijv00000glajl1xljzl',
+        createdAt: new Date('2022-08-09T19:50:25.003Z'),
+        updatedAt: new Date('2022-08-09T19:50:25.019Z'),
+      },
+    ],
+  };
+
+  it('works with simple-key dehydrated QueryClient', () => {
+    const queryClient = new QueryClient();
+    queryClient.setQueryData(['templates'], [template]);
+    const input = { props: { dehydratedState: dehydrate(queryClient) } };
+
+    const stringified = SuperJSON.stringify(input);
+    const parsed: any = SuperJSON.parse(stringified);
+
+    expect(parsed).toEqual(input);
+  });
+
+  it('works with double-key dehydrated QueryClient', () => {
+    const queryClient = new QueryClient();
+    queryClient.setQueryData(['templates'], [template]);
+
+    queryClient.setQueryData(['templates', template.id], template);
+    const input = { props: { dehydratedState: dehydrate(queryClient) } };
+
+    // INFO: The following code produces the same kind of log described
+    // on https://github.com/blitz-js/superjson/issues/196
+    // console.log(JSON.stringify(input, null, 2));
+
+    const stringified = SuperJSON.stringify(input);
+    const parsed: any = SuperJSON.parse(stringified);
+
+    expect(parsed).toEqual(input);
+  });
+});
+
 test('prototype pollution - __proto__', () => {
   expect(() => {
     SuperJSON.parse(

yarn.lock

@@ -1412,6 +1412,11 @@
   dependencies:
     "@sinonjs/commons" "^1.7.0"
 
+"@tanstack/query-core@^4.2.2":
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/@tanstack/query-core/-/query-core-4.2.2.tgz#134a45887ff3fc8667e81936028c746564c90882"
+  integrity sha512-cA+hTvYtZU6cTpY1gmfokLWK76mciEkTW1vN2CJ4CZf7xhpO9HmvmzQo9mTygV96a9EGQUuYPt37fYFrsnzmww==
+
 "@types/babel__core@^7.0.0", "@types/babel__core@^7.1.7":
   version "7.1.12"
   resolved "https://registry.yarnpkg.com/@types/babel__core/-/babel__core-7.1.12.tgz#4d8e9e51eb265552a7e4f1ff2219ab6133bdfb2d"