TanStack
JSDoc return type inference broken for useQuery/createQuery, but not for useMutation/createMutation
Describe the bug
When typing createQuery and createMutation with jsdoc comments, the return data type gets inferred correctly for the mutationFn, but not for queryFn. If i mistype the data in a query, i will not get a warning. For mutations, that works.
Your minimal, reproducible example
https://stackblitz.com/edit/tanstack-query-jsdoc?file=src%2Flib%2Ftest.js
Steps to reproduce
Have a look at the stackblitz demo, in the comments it is described how to see that type inference behaves inconsistently.
Expected behavior
queryFn should infer from the attached jsdoc type at createQuery just like createMutation does. Other types of create... could be affected as well.
How often does this bug happen?
Every time
Screenshots or Videos
No response
Platform
- macOS latest
- VSCode 1.91
- Node 20.15.0
Tanstack Query adapter
svelte-query
TanStack Query version
5.49.0
TypeScript version
Additional context
No response
Hi @PhilippMolitor , I've tried this with @tanstack/react-query and it has the same limitation. Both share the underlying QueryObserverResult and MutationObserverResult types.
