React is needed during testing

[dgrcode]

Describe the bug

I'm trying to reproduce an issue in a different library (for reference issue: ravionhq/superjson#196, PR: ravionhq/superjson#197). For that I'm using QueryClient and dehydrate, but I'm getting the following error:

Cannot find module 'react' from 'node_modules/@tanstack/react-query/build/cjs/react-query/src/useQueries.js'

    Require stack:
      node_modules/@tanstack/react-query/build/cjs/react-query/src/useQueries.js
      node_modules/@tanstack/react-query/build/cjs/react-query/src/index.js
      src/index.test.ts

This is the whole test:

  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);

Your minimal, reproducible example

https://codesandbox.io/s/tanstack-query-react-dependency-bnkx3l?file=/src/index.test.js

Steps to reproduce

1. Go to the reproduction codesandbox
2. Go to the tests tab
3. The test doesn't pass

Expected behavior

I think the test should pass, since it's not using any hook, just the QueryClient and dehydrate.

How often does this bug happen?

Every time

Screenshots or Videos

No response

Platform

• OS: MacOS
• Browser: Brave
• Version: 1.39.11

react-query version

4.2.1

TypeScript version

No response

Additional context

No response

[TkDodo]

QueryClient and dehydrate are both part of the query-core. So if you only depend on that, the test works:

https://codesandbox.io/s/tanstack-query-react-dependency-forked-x2e2v9?file=/src/index.test.js

- import { QueryClient, dehydrate } from "@tanstack/react-query";
+ import { QueryClient, dehydrate } from "@tanstack/query-core";

basically: if you depend on react-query, you need react. If you don't need react, don't depend on react-query :)

[dgrcode]

Nice! Good to know :)

This is a weird place to say this, but I'm not sure there's a good place. Thanks for being so helpful all over the place: issues (this one), discussions (#4024), PR (#4010), and even a StackOverflow Question I asked about NextJS SSR (https://stackoverflow.com/a/73342248/5452969). And those are just the places where you've helped me directly. I've definitely been helped by answers you left to other people. Thanks! 🙏