Unfortunately, a new version of Chrome (48) removes a feature that is core to JointJS/JointJS+. This feature is the SVGGraphicsElement.getTransformToElement()function. The motivation behind removing the method is - according to the Chrome team - open issues about how this method is supposed to behave.
To overcome compatibility issues with future versions of Chrome, we prepared a polyfill that makes sure this method exists. Before a new version of JointJS/JointJS+ is released (or if you, for any reason, don't want to upgrade), include the following code before you load your application JavaScript:
SVGElement.prototype.getTransformToElement = SVGElement.prototype.getTransformToElement || function(toElement) {
return toElement.getScreenCTM().inverse().multiply(this.getScreenCTM());
};
Thanks!
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