Bug: normalizeTouchPosition null pointer

[blaues0cke]

For some reasons, on touch devices sometimes normalizeTouchPosition gets called while event.targetTouches contains zero items. This will make this code to fail since the first item (targetTouches[0]) does not exist:

const position = {
    clientX: ('targetTouches' in event) ? event.targetTouches[0].pageX : event.clientX,
    clientY: ('targetTouches' in event) ? event.targetTouches[0].pageY : event.clientY
};

The error then is

undefined is not an object (evaluating 'event.targetTouches[0].pageX')

[woutervh-]

Hi @blaues0cke

Very strange indeed, since under normal circumstances the normalizeTouchPosition should not be called when there are no pointers in the event. I will investigate this and put in extra safety measures to prevent the error from happening.

Thanks!

[woutervh-]

Fixed in version 2.1.5

[blaues0cke]

Thank you very much (appeared on an iPad pro running iOS 12). :-)