optimistic *delete* with infinite query

[pallid quail]

What should I do if I want to implement optimistic delete? For example:

• My page size is 10. In getNextPageParam, if the length of lastPage is less than 10, then return undefined to indicate that there's no more data.
• The first page is loaded
• I delete one item, setQueryData with 9 remaining items
• getNextPageParam is called again. Now lastPage only has 9 < 10 items, and it doesn't load anymore.

My hack is to replace the deleted item with null or undefined, and skip them when render.

[rustic owl]

getNextPageParam is called again. Now lastPage only has 9 < 10 items, and it doesn't load anymore.

how is getNextPageParam implemented in your case?

[pallid quail]

It's very simple check against page size

getNextPageParam: (lastPage, allPages) => {
  if (lastPage.length < pageSize) {
    return undefined;
  }
  return allPages.length + 1;
}