node-notifer on Linux (Specifically Ubuntu) does not support replies and wait.

[abidahmadq]

The underlying cause for this is notify-send which is used by node-notifier to send notifications does not support wait and reply functionality.
This is also mentioned on documentation of node-notifier.
https://github.com/mikaelbr/node-notifier

To get more info about notify-send on Ubuntu check this repo ->
http://manpages.ubuntu.com/manpages/hirsute/en/man1/notify-send.1.html