Function _emit

lib/FileAPI.core.js:1457–1465

(target, fn, name, res, ext)

	function _emit(target, fn, name, res, ext){
		var evt = {
			  type:		name.type || name
			, target:	target
			, result:	res
		};
		_extend(evt, ext);
		fn(evt);
	}


	function _hasSupportReadAs(method){