Pre-Pro Fn invocation

gistfile1.js

function func(fn, beforeFn, afterFn /*, thisArgs*/){
 var context = arguments.length === 4 ? arguments[3] : null;
 var queue = [beforeFn, fn, afterFn];
 
 return function(){
  var args = [].slice.call(arguments);
   queue.forEach(function(fn, index){
      index === 1 ? fn.apply(context,args) : fn.apply(context); 
    });
  };
}

Wrap any function with a before() and after() logic