setQueryData Function updater call even if there is no cache

[itamardavidyan]

When I call an updater Function for query cache that not exist (debug with react-query-devtools) the updater Function argument is undefined.

queryCache.setQueryData(queryKey, prev => {
        console.log(prev); // return undefined
        // ... update prev
        return {...prev};
});

That's how it's supposed to be?

I know there is another option to implement this:

const data = queryCache.getQueryData(queryKey);
if (!data) return;
queryCache.setQueryData(queryKey, prev => {
        console.log(prev); // return undefined
        // ... update prev
        return {...prev};
});