Cannot read property createContext of undefined with Jest

[TrueWill]

Describe the bug

Getting

TypeError: Cannot read property 'createContext' of undefined

on import { useQuery } from 'react-query' when running tests with Jest.

To Reproduce
Steps to reproduce the behavior:

We saw this when using a jest.config.js with the line moduleDirectories: ['node_modules', './'],
react-query v3.16.0

Expected behavior
Every other library works fine with Jest.

Desktop (please complete the following information):

• OS: macOS Catalina
• Browser: n/a - running tests with Jest v26.6.3 and Node v14.17.0

Additional context

A coworker figured out a fix based on blitz-js/blitz#1323 - changing the Jest config to moduleDirectories: ['node_modules', '<rootDir>'],. But this is the only library that's affected by it. According to the linked issue, this is caused by react-query having require("react") inside a folder named react.

[brainer1]

+1, having the same issue here
Edit: the fix you posted worked for me :)

[TkDodo]

This is not the first time that having a sub-directory named react has led to some confusion for bundlers. I’d generally support a rename, not sure to what though (suggestions welcome), and also not sure if @tannerlinsley agrees :)

[TimMouskhelichvili]

Hey any updates on this?

[TkDodo]

should we just rename it to reactjs ?

[TkDodo]

@TrueWill would you like to contribute this?

[TkDodo]

Any updates here? If someone wants to contribute the change, I’d be happy to look at it and merge it

[TrueWill]

@TrueWill would you like to contribute this?

Sorry - I don't even have time to update my own OS projects right now. :/

[EddyVinck]

I am going to try to fix this on Friday, we have an OSS contribution day at work.

[EddyVinck]

@TrueWill @TkDodo I tried creating a reproduction in CodeSandbox but I can't reproduce it there

https://codesandbox.io/s/react-query-2339-xgupz?file=/src/TestComponent.test.js

I'll try to create a reproduction locally

Update: reproduction repo https://github.com/EddyVinck/react-query-2339

Running into some issues with yarn link causing me to have multiple React versions, might take a bit longer than I thought

[EddyVinck]

PR open 🚀

[TkDodo]

will be available in v4.