Where can I find "configuration options" for the (query) client?

[vfonic]

I'm using React and here's how I initialize QueryClientProvider in my App.tsx:

const queryClient = new QueryClient()

const App = () => (
  <QueryClientProvider client={queryClient}>
    <Whatever />
  </QueryClientProvider>
)
export default App

I found out that default QueryClient configuration is a bit too aggressive for my liking and I wanted to change it.

I went to the documentation site (I use v4, which is latest).
Checked here: https://tanstack.com/query/v4/docs/react/guides/important-defaults
And here: https://tanstack.com/query/v4/docs/react/reference/QueryClient#queryclientgetdefaultoptions

Searched for: default, option...

I found some scarce options documentation in the examples and here:
https://tanstack.com/query/v4/docs/react/reference/useQuery

I think new QueryClient() config options documentation is extremely important. Am I missing something obvious here?

[vfonic]

Even TypeScript didn't get me too far:

export interface DefaultOptions<TError = unknown> {
  queries?: QueryObserverOptions<unknown, TError>
  mutations?: MutationObserverOptions<unknown, TError, unknown, unknown>
}

[TkDodo]

it's basically:

new QueryClient({
  defaultOptions: {
    queries: {}
  }
})

and then inside Queries, you put in whatever you would normally pass to useQuery (that's the QueryObserverOptions you found).

An example can also be found here: https://tanstack.com/query/v4/docs/react/reference/QueryClient#queryclient

[vfonic]

Yes! That's the page I was looking for and couldn't find.

I suggest renaming this page or make it more obvious/findable.

...and it's misleading to say

The QueryClient can be used to interact with a cache

Yes, it's true, it can be used to interact with the cache, but it's actually much much more than that:

1. It's required to be used to interact with cache
2. It's required to be configured/instantiated in order to make any queries and/or queries to cache
3. It's the most integral part of the library. Without QueryClient, you can't do pretty-much anything (correct me if I'm wrong here)