What is the right way to create dynamic objects in Qml?!?

Hi
I study example form site: http://doc.qt.io/qt-5/qtqml-javascri...tcreation.html
It is about dynamic objects creation. Notable part of this article is following example:

Code:

---

var component;
var sprite;
 
function createSpriteObjects() {
    component = Qt.createComponent("Sprite.qml");
    if (component.status == Component.Ready)
        finishCreation();
    else
        component.statusChanged.connect(finishCreation);
}
 
function finishCreation() {
    if (component.status == Component.Ready) {
        sprite = component.createObject(appWindow, {"x": 100, "y": 100});
        if (sprite == null) {
            // Error Handling
            console.log("Error creating object");
        }
    } else if (component.status == Component.Error) {
        // Error Handling
        console.log("Error loading component:", component.errorString());
    }
}

---

It (optionally) splits object creation to 2 parts. It is clear that object maybe created in a bit lengthy period of time, so to avoid app freezing it returns and fire signal when ready.
In my opinion the problem with first line in quoted example:

Code:

---

var component;

---

What if I will create another object bertween exit createSpriteObjects() and before call finishCreation()?!? It is protected some how?!? It is impossible?!?
I think it is race! Most often it will works, but some day it will crash silently...

What is your opinion of the subject?!?

thanks and best regards
Szyk Cech