define(['underscore'],function(_){'use strict';var superReg=/\b_super\b/;return{wrap:function(target,wrapper){if(!_.isFunction(target)||!_.isFunction(wrapper)){return wrapper;}
return function(){var args=_.toArray(arguments),ctx=this,_super;_super=function(){var superArgs=arguments.length?arguments:args.slice(1);return target.apply(ctx,superArgs);};args.unshift(_super);return wrapper.apply(ctx,args);};},wrapSuper:function(target,wrapper){if(!this.hasSuper(wrapper)||!_.isFunction(target)){return wrapper;}
return function(){var _super=this._super,args=arguments,result;this._super=function(){var superArgs=arguments.length?arguments:args;return target.apply(this,superArgs);};result=wrapper.apply(this,args);this._super=_super;return result;};},hasSuper:function(fn){return _.isFunction(fn)&&superReg.test(fn);},extend:function(target){var extenders=_.toArray(arguments).slice(1),iterator=this._extend.bind(this,target);extenders.forEach(iterator);return target;},_extend:function(target,extender){_.each(extender,function(value,key){target[key]=this.wrap(target[key],extender[key]);},this);}};});