Add-in creation on and for Excel for MacOS

[lord anubis]

Hello Friends,

Finding nothing about this, so I try to find here the answer.

Is there a way to create a Add-in on the mac?
Is there a way to create a C Add-in?
Saw some windows Javascript. Is there a way to create a Add-in using JS on the Mac?

Did someone create some MacOS glue API ( C, Obj-C, Python, Swift ) to the MS api?

Many questions, but its important for me.

Thank you.

LA

[lord anubis]

Please, is there someone with knowledge about the above?