I have been searching for the past few days but the only "lightweight" solutions I came across had the username and password hard-coded into the app which seems pretty insecure or not? I also feel passportJS is overkill for this kind of functionality and honestly quite surprised there aren't any tutorials on it since it seems a very normal use-case scenario. Well I suppose I just need to learn more to be able to set it up that way :) I will try n look up more stuff related to the way you put it, thanks for that :)

Thank you, so nice to see that MEN is actually thing even though most tutorials don't even mention the possibility :) Will definitely look into Vue!