TanStackT
TanStack•3y ago•
24 replies
dead-brown

useQuery data is undefined even with initialData/placeholderData

Hey, i have a custom hook that returns a 
useQuery
 that fetches the options for a select input. I have tried with both 
initialData
 and 
placeholderData
 set as an empty array (which typewise is not incorrect, since I can have a select without options until they are added), but the data returned is set always set as 
<T | undefined>
 with 
T
 being the type of the options... Does it still require me to validate if 
isSuccess
 is true in order to set the type to 
T
 even though I have set the "default data"?

- @tanstack/react-query v4.24.4
- typescript v4.9.5
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