sortUndefined not working as expected

[yovany-lg]

Describe the bug

Recently, I made a package upgrade from 8.5.13 to 8.10.7, and now, sorting undefined values doesn't work as usual. My dataset has some values as undefined for some specific requirements, hence I added sortUndefined : 1 as suggested in the docs.

After reviewing again my implementation I decided to try out reverting the lib version, and it worked just fine.

Your minimal, reproducible example

https://codesandbox.io/p/devbox/hungry-rhodes-kf5f6p

Steps to reproduce

I'm not sure if it is only me, but creating a fork and updating the Sorting example in Codesandbox has been painful, it's been too slow these last few days. I had to lower the length of the dataset to 1000.

To reproduce the issue, my setup looks like this:

Create a dataset with rows containing some number values, for example:

const data = [{
  id: 1,
 amount: 10
},{
  id: 2,
  amount: undefined
}];

Then, on the column definitions:

{
 accessorKey: 'amount'
header:...
// Just an example...
cell: (props) => props.getValue() ?? '-'
sortUndefined: 1
}

Sorting by amount in descending will put undefined values on top.

Expected behavior

The expected behavior is: Sorting by amount in descending will put undefined values at the bottom of the table.

How often does this bug happen?

Every time

Screenshots or Videos

No response

Platform

MacOS - Chrome

react-table version

8.10.7

TypeScript version

5.3.2

Additional context

No response

Terms & Code of Conduct

• I agree to follow this project's Code of Conduct
• I understand that if my bug cannot be reliable reproduced in a debuggable environment, it will probably not be fixed and this issue may even be closed.

[MiccWan]

Updated: The behavior seems to be intended, which is changed in v8.9.2, commit 76a87cc061d4f72c40e7.

Also happens in 8.15.3.