I do however suspect that this is the default when you create a new node.js project, so it might or might not be what the author wanted..?
Anyways, often the author meant it to be open source and just forgot to add a license. Here's one example I stumbled across where the author had just forgotten it: https://github.com/louisukiri/SlackClient/pull/5
A possibly more entertaining example is the project that was on the front page here a few days ago [0] where the author claimed that the project was Open Source (which it was not, it was Apache 2.0 with Commons Clause, -which even according to them Commons Clause people themselves is not Open Source[1]. This has resultet in a rather long thread in the issue tracker[2] which is simultaneously sad (because it is necessary but distracts from a promising project) and entertaining (for people who can enjoy the forum equivalent of AFV anyways).
Yes, it is. ISC is, for those who may not know it, an MIT license reworded, to match international jurisdiction, which implies certain rights from the ground up.
https://github.com/nergal-perm/zettelkasten-vscode/blob/mast...