


class CA {
constructor(){
}
}
class CB extends CA {
constructor(p){
super(p);
}
}
var cb = null; // debugger pointer
//cb = new CB(123); // can not step in, will terminate node.exe
cb = new CB(); // step in, then follow line can step in, else can not
cb = new CB(123); // can step in if above is step in
console.log(cb);