Create a callable object in JavaScript which returns an isolated clone of itself. This is *not* a class, hence using the new keyword has no effect.

callable-object.js

// How to define:
// --------------
var callableObjectFn = function() {
    // Use CallableObject as name in constructor function, but also when setting property below.
    var CallableObject = (function(CallableObject) {
        return function() {
            return CallableObject();
        };
    }(callableObjectFn));
    CallableObject.property = 'value';
    return CallableObject;
};
var CallableObject = callableObjectFn();
 
// How to use:
// -----------
var foo = CallableObject;
foo.property = 'anotherValue';
foo.anotherProperty = 1;
 
var bar = CallableObject();
bar.property = 'yetAnotherValue';
bar.anotherProperty = 2;
 
var baz = bar();
baz.property = 'yetAgainAnotherValue';
baz.anotherProperty = 3;
 
var qux = CallableObject();
 
// Output: function() { return CallableObject(); }.
console.log(CallableObject);
 
// Output: anotherValue, yetAnotherValue, yetAgainAnotherValue, value.
console.log(foo.property, bar.property, baz.property, qux.property);

// Output: 1, 2, 3, undefined.
console.log(foo.anotherProperty, bar.anotherProperty, baz.anotherProperty, qux.anotherProperty);