Wrong output when checking a ZFS pool

When checking the size of a ZFS pool, checkDiskSpace('/my-zfs-pool') is always indicating a 100% disk usage.

Is this a known limitation?

My code is based on df, it seems like df is wrong about any ZFS size :/

Actually df --output=avail,size,target | grep '/my-zfs-pool' produces the right output (when ran from the cli), I am not sure how it's leveraged here though :)

Here is the code used on UNIX-like platforms: https://github.com/Alex-D/check-disk-space/blob/d678b42e13facb8bf0803e5b410c78fde4f056ff/src/index.ts#L156-L162

Please, give me your OS, version, and the output of: df -Pk -- /my-zfs-pool

I did not have a ZFS pool setup, and I did not have the time to get one ready.

Then, I will check if I can do anything :)