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There is a newer version: 10.20.0.29356

Constructor functions, which create new object instances, must only be called with new. Non-constructor functions must not. Mixing
these two usages could lead to unexpected results at runtime.
Noncompliant Code Example
function getNum() {
  return 5;
}

function Num(numeric, alphabetic) {
  this.numeric = numeric;
  this.alphabetic = alphabetic;
}

var myFirstNum = getNum();
var my2ndNum = new getNum();  // Noncompliant. An empty object is returned, NOT 5

var myNumObj1 = new Num();
var myNumObj2 = Num();  // Noncompliant. undefined is returned, NOT an object