Error: The `queries` property is undefined and cannot be read (react.js)

Here is the code snippet I am currently working with:

import { useState } from 'react'
import { QueryClientProvider, QueryClient } from 'react-query'
import { ReactQueryDevtools } from 'react-query-devtools'

import Navbar from './components/Navbar'
import Planets from './components/Planets'
import People from './components/People'

const queryClient = new QueryClient

function App() {

  const [page, setPage] = useState('planets')

  return (
    <QueryClientProvider client={queryClient}>
      <div className="App">
        <h1>Star Wars Info</h1>
        <Navbar setPage={setPage} />

        <div className="content">
          {page === 'planets' ? <Planets /> : <People />}
        </div>
      </div>
      <ReactQueryDevtools initialIsOpen={false} />
    </QueryClientProvider>
  )
}
export default App

... but unfortunately, I am encountering this error:

TypeError: Cannot read property 'queries' of undefined

https://i.stack.imgur.com/Rba0Q.png

Any suggestions on how to troubleshoot and resolve this issue?

Answer №1

As stated in this excerpt...

import { QueryClientProvider, QueryClient } from 'react-query'

... you're utilizing the latest version of React Query library, namely v3. The introduction of QueryClientProvider as a replacement for both ReactQueryConfigProvider and ReactQueryCacheProvider was highlighted as a key enhancement.

Moreover, a significant advancement in this library relevant to your code was the integration of Devtools into the package. To include them, the new method is...

import { ReactQueryDevtools } from 'react-query/devtools'

The outdated archived version of Devtools - currently imported into your code - is compatible with React Query v2 but not with v3.

The specific issue causing the error message isn't immediately evident. It’s suspected that it could relate to attempting to use a component that has been removed or altered in React Query v3, like QueryCache.


On a related note: if you meticulously follow a tutorial and encounter issues, often the root cause lies in incompatible versions of dependencies. The ever-evolving React ecosystem sometimes leads to discrepancies due to different components evolving at varying rates.

Answer №2

According to information provided in the documentation:

The development tools are separated into the react-query/devtools package, eliminating the need for any additional installations.

Answer №3

Cause

The issue was caused by using an outdated version of React Query Dev tools.

Resolution

To fix the problem, install the latest version of React Query Dev tools by running the following command:
npm i @tanstack/react-query-devtools

You can add the below code snippet in any Component, but it is recommended to include it in the main app.js or router file to ensure that dev tools are accessible on all pages.

import { ReactQueryDevtools } from '@tanstack/react-query-devtools'

function App() {
  return (
      <ReactQueryDevtools initialIsOpen={false} />
  )
}

Answer №4

To ensure proper functionality on v3, it is recommended to utilize the built-in devtools provided by the library (react-query/devtools) instead of relying on the standalone package react-query-devtools.

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