defining getters/setters in an object literal with a self-invoking function javascript

When defining an object literal its possible to use a self-invoking function so the function has access to private variables,

obj={
    value:(function(){
        var private;
        return function(){
            return true;
        }
    }())
};

But is it possible to do the same thing with a getter/setter in an object literal?

obj={
    get value(){
        return value;
    },
    set value(v) {
        value=v;
    }
};

Answer

[edit 2022] A pretty old answer.

More actual: you can create a factory function. In the snippet the factory creates an object with (get and set) access (through the closure) to a private variable.

const obj1 = objFactory(`Hello`);
const obj2 = objFactory(`World`);
console.log(`${obj1.privateThing} ${obj2.privateThing}`);
obj1.privateThing = `Goodbye`;
console.log(`${obj1.privateThing} ${obj2.privateThing}`);

function objFactory(somethingPrivate) {
  return {
    get privateThing() { return somethingPrivate; },
    set privateThing(value) { somethingPrivate = value; }
  };
}

The old answer:

Not really. You can also create an Immediately Invoked Function Expression (IIFE) for obj though:

obj = function(){
  var privatething = 'hithere';
  
  return {
    get value() {
      return privatething;
    },
    set value(v) {
      privatething = v;
    }
  };
}();
obj.value; //=> 'hithere';
obj.value = 'good morning to you too';
obj.value; //=> 'good morning to you too'