useSuspenseQuery types: data can be undefined #8591
Description
Describe the bug
useSuspenseQuery can return undefined data e.g. if select throws, however the types do not reflect this.
Your minimal, reproducible example
https://stackblitz.com/edit/tanstack-query-2bfa3dy1?file=src%2Findex.tsx&preset=node
Steps to reproduce
const query = queryOptions({
queryKey: ['foo'],
queryFn: () => {
const data = { a: { b: 'c' } };
return Promise.resolve(data);
},
select: (x) => {
throw new Error('foo');
return x.a;
},
});
function A() {
const queryClient = useQueryClient();
const { data, error } = useSuspenseQuery(query);
console.log('Query result', { data, error });
// ❌ `data` is `undefined` at runtime, but
// types make it look like it will always exist
return data.b;
}Expected behavior
The types should match the runtime behaviour.
I also wonder whether in this case the error should be thrown?
Not all errors are thrown to the nearest Error Boundary per default - we're only throwing errors if there is no other data to show.
In this case, we don't have data to show, because select always fails.
How often does this bug happen?
None
Screenshots or Videos
No response
Platform
N/A
Tanstack Query adapter
None
TanStack Query version
5.63.0
TypeScript version
No response
Additional context
No response