data inside combine is undefined when using useSuspenseQueries

[NMinhNguyen]

Describe the bug

The types for data when using useSuspenseQueries with combine say that it’s not undefined, but it appears that combine is called when individual queries still have isLoading: true (i.e. before the component unsuspends). I’m not sure if this is a typing bug, or whether combine shouldn’t be called until data is populated (this seems more reasonable to me).

Your minimal, reproducible example

https://codesandbox.io/p/devbox/elegant-wozniak-tgds5q?file=%2Fsrc%2Findex.tsx

Steps to reproduce

1. Open repro link
2. Notice an error right away: Cannot read properties of undefined (reading 'value')

Expected behavior

Either a TypeScript error or no runtime error.

How often does this bug happen?

Every time

Screenshots or Videos

No response

Platform

• OS: macOS
• Browser: Chrome
• Version: 123.0

Tanstack Query adapter

react-query

TanStack Query version

5.28.9

TypeScript version

5.4.3

Additional context

No response

[TkDodo]

I'm pretty sure combine shouldn't run until the queries finish suspending. Will take a look