The known issue from the blog?

[PlNG]

This segment of code looks slightly different from the rest of the comparisons to "undefined" throughout the code. Is it missing a typeof operator? It's been pretty-printed / cleaned by me, but you should get the general idea to look at net.Socket.prototype.setKeepAlive

net.Socket.prototype.setKeepAlive = function (enable, delay) {
    enable = enable === "undefined" ? false : enable;
    delay = delay === "undefined" ? 0 : delay;
    chrome.socket.setKeepAlive(self._socketInfo.socketId, enable, initialDelay, function () {});
};

Saw the project from a Reddit link in /r/JavaScript

[525c1e21-bd67-4735-ac99-b4b0e5262290]

If the aim is to comply with http://nodejs.org/api/net.html#net_socket_setkeepalive_enable_initialdelay ...

Then yes, this code is incorrect.