How to set event via fabric.Image.fromURL constructor?

Question

JavaScript

var imgOptions = { 'left': 50, 'top': 550, 'selectable': false }
imgOptions.__eventListeners = {};
imgOptions.__eventListeners['mouseup'] = [];
imgOptions.__eventListeners['mouseup'].push(function () {
  console.log('mouseup event');
});

fabric.Image.fromURL('/url/mypng/', function(oImg) {
  canvas.add(oImg);
}, imgOptions);

Now there is such a code.
I spied, in the source code of the on () function, which sets events on the object, where you need to write callbacks.
And I brazenly shove them into the object's parameters (I also looked in the constructor's source code that this is possible) by analogy with the native on() method .
But how all the same to transfer events so that the constructor himself assigns them to the created object?