import QtQuick 2.5
import QtQuick.Controls 1.4
Item {
    id : rootObject
    width : 640
    height : 480
    Button {
        anchors.centerIn: parent
        text : "Crash"
        onClicked: {
            var fn = function(a) { console.log("FOO",a) ; }
            var gn = generator(fn,"BAR");
            timer.setTimeout(gn,0);
        }
    }

    function generator(fn) {
        var args = Array.prototype.slice.call(arguments,1);
        return function() {
            //return fn.apply({}, args} works . 
            return fn.apply(this,args);
        }
    }

    Timer {
        id : timer
        property var fn
        function setTimeout(fn,ms){
            interval = ms;
            timer.fn = fn;
            start();
        }
        onTriggered: {
            if(typeof fn === 'function')
                fn();
        }
    }
}