Function getPreviousPageParam

packages/query-core/src/infiniteQueryBehavior.ts:147–154

(
  options: InfiniteQueryPageParamsOptions<any>,
  { pages, pageParams }: InfiniteData<unknown>,
)

}

function getPreviousPageParam(
  options: InfiniteQueryPageParamsOptions<any>,
  { pages, pageParams }: InfiniteData<unknown>,
): unknown | undefined {
  return pages.length > 0
    ? options.getPreviousPageParam?.(pages[0], pages, pageParams[0], pageParams)
    : undefined
}

/**
 * Checks if there is a next page.