src/libs/Blob.js
function FileReader() {
    	if (!(this instanceof FileReader))
    		throw new TypeError("Failed to construct 'FileReader': Please use the 'new' operator, this DOM object constructor cannot be called as a function.")

    	var delegate = document.createDocumentFragment()
    	this.addEventListener = delegate.addEventListener
    	this.dispatchEvent = function(evt) {
    		var local = this['on' + evt.type]
    		if (typeof local === 'function') local(evt)
    		delegate.dispatchEvent(evt)
    	}
    	this.removeEventListener = delegate.removeEventListener
    }
function FileReader() {
    	if (!(this instanceof FileReader))
    		throw new TypeError("Failed to construct 'FileReader': Please use the 'new' operator, this DOM object constructor cannot be called as a function.")

    	var delegate = document.createDocumentFragment()
    	this.addEventListener = delegate.addEventListener
    	this.dispatchEvent = function(evt) {
    		var local = this['on' + evt.type]
    		if (typeof local === 'function') local(evt)
    		delegate.dispatchEvent(evt)
    	}
    	this.removeEventListener = delegate.removeEventListener
    }
***************************************************** /*                FileReader constructor *****************************************************