How to keep error state with placeholderData from useQuery?

[park-jemin]

I'm using placeholderData to maintain the previous data when transitioning between pages, which defaults it to a success state. However, when I hit an error from a fetch call, I would like to keep the error state instead of keeping the previous data when I transition, until the next time I hit a successful fetch or cache hit.

The flow I'm running into rn looks kinda like this:

• Call useQuery with page = 1, returns a successful response
• Call useQuery with page = 2, returns a successful response while temporarily using the previous page data as a placeholder
• Call useQuery with page = 3, returns an error response (with isError = true) while temporarily using the previous page data as a placeholder
• Call useQuery with page = 4, returns an error response, but temporarily flashes the page 2 data as a placeholder (with isError temporarily being set to true)

How should I go about approaching this?

[TkDodo]

I don't think its possible to keep the error. You can implement placeholderData to return undefined if the query is in error state to avoid the flash.