gistfile1.js

this.getCategory = function(){

       //2. use async : test key input is idMenu
       me.listCategory = async.map([1], helper.categoryInMenu, function(err, result){
          return result;
       });
       
       return me.listCategory;
    }

i try

this.getCategory = function(){

       //2. use async : test key input is idMenu
       var list = async.map([1], helper.categoryInMenu, function(err, result){
          return result;
       });

       console.log(list); // display undefined =)))        

       return list; // so list = undefined;
    }

async.map is void method, not return ?