useQueryClient isn't defined - react-query

Question

Pretty simple. We're using "react-query": "^2.26.1", and when I try this, from the v2 docs:
import { useQueryClient } from 'react-query'
it doesn't recognize it as existing.
Indeed, node_modules/react-query/types/react/index.d.ts doesn't have it:
export { ReactQueryCacheProvider, useQueryCache, } from './ReactQueryCacheProvider';
export { ReactQueryConfigProvider } from './ReactQueryConfigProvider';
export { ReactQueryErrorResetBoundary, useErrorResetBoundary, } from './ReactQueryErrorResetBoundary';
export { useIsFetching } from './useIsFetching';
export { useMutation } from './useMutation';
export { useQuery } from './useQuery';
export { usePaginatedQuery } from './usePaginatedQuery';
export { useInfiniteQuery } from './useInfiniteQuery';
export { UseQueryObjectConfig } from './useQuery';
export { UseInfiniteQueryObjectConfig } from './useInfiniteQuery';
export { UsePaginatedQueryObjectConfig } from './usePaginatedQuery';
export { ReactQueryCacheProviderProps } from './ReactQueryCacheProvider';
export { ReactQueryConfigProviderProps } from './ReactQueryConfigProvider';
export { ReactQueryErrorResetBoundaryProps } from './ReactQueryErrorResetBoundary';
What's going on here?

Answer 1

The v2 docs incorrectly show v3 content. useQueryClient doesn't exist in v2.
The best way to consume the v2 docs would be here:
https://github.com/TanStack/query/tree/v2.26.4/docs/src/pages
However, please keep in mind that the last v2 release was pretty much 2 years ago (2020-12-07) is not actively maintained. v4 is the latest version (available under #tanstack/react-query), and work on v5 will start soon
https://tanstack.com/query/v4