Node,js console loading

loading.js

var startLoader = function () {
 (function() {
    process.stdout.write('Some text here...' + "\n");
    var P = ["\\", "|", "/", "-"];
    var x = 0;
    return setInterval(function() {
      process.stdout.write("\r" + P[x++]);
      x &= 3;
    }, 250).unref();
  })();
}