I'm trying to create an options menu to select the value of a function variable with dat.GUI.

In the 0.7.8 version of dat.GUI this code works - menu items after the 'func' label are displayed enter image description here

but in the newest version (0.7.9) it does not work - menu items after the 'func' label are not displayed enter image description here

Why is that?

function func1() {
 alert('function1');
}
function func2() {
 alert('function2');
}
function init() {
 // setup the control gui
 const controls = new function () {
 this.func = func1;
 };
 const gui = new dat.GUI();
 gui.add(controls, 'func', {
 function1: func1, 
 function2: func2
 })
}