Leaking memory due to timer unref

unref-leak.js

var setTimeout = require('timers').setTimeout;

var work = 0;

setTimeout(function loop() {
    var timer = setTimeout(function () {
        work += 1;
        loop();
    }, 0);
    timer.unref();
}, 0);

(function keepalive() {
    setTimeout(function () { keepalive(); }, 1000000000);
}());