Looks like it tries wl-copy, then tries xclip and then tries xsel. I have no idea what those are but google says it's for Wayland, so, I think it's a linux function trying to copy to clipboard? I think their problem is with the use of '.then(...=>...)' since there doesn't seem to be a way to tell each function that the nested ones actually finished.

It looks like a search for the command line tool available to send content to the clipboard.

Can't tell if that obfuscated code works though.