# Chapter 4) The React `useQuery()` / `useMutation`
[tanstack-react-query] bug: 'createContext' is not exported from 'react'
🙋♂️ help wanted🐛 bug: unconfirmed
feat: wanna default handle callback for `useMutation` in `react-query`
✅ accepted-PRs-welcome
Context type of queries and mutations isn’t inferred when using React Query
👉 good first issuewontfix