Hi,

I'm using V3 branch since multiple months and it works well but i've discoved this small regression.
I'm unable to send empty files when using asyncReadFileFn hook.

Investigating, it seems to come from there:

From what i've seen convert to this fix it:
if (data && (data.size > 0 || this.fileObj.size === 0)) {

But i would like to have a feedback from you @drzraf before making an MR.