index.js

function ObservableArray() {
  this.name = 'Init';
};

ObservableArray.prototype.nameChange = function(name) {
  this.dispatchEvent({
    type: 'changeBefore',
    data: this,
  });
  this.name = name;
  this.dispatchEvent({
    type: 'change',
    data: this,
  });    
}

h5.mixin.eventDispatcher.mix(ObservableArray.prototype);