Don't work with IIFE

[daricat]

Hi :) I think app have some problems with IIFE.
When I try this example, app had stop.

console.log(1);
setTimeout((function two() { 
    console.log('lol'); 
    return function nested() {
        console.log(2);
    }
})(), 1000);
setTimeout(function three() { console.log(3) }, 0);
console.log(4);

And in console got this error: