ES7 Proxy Polyfill

ProxyPolyfill.js

var dfGetter=function(target, property, receiver){
  return target[property];
};
var dfSetter=function(target, property, value,  receiver){
  return target[property]=value;
};
const _Proxy = function(target, handler){
  var me=this;
  if(!handler.get){
    handler.get = dfGetter;
  }
  if(!handler.set){
    handler.set = dfSetter;
  }
  for(var key in target){
    Object.defineProperty(me, key, {
      enumerable:true,
      get:function(){
        debugger;
        return handler.get(target, key, me);
      },
      set:function(value){
        return handler.set(target, key, value, me);
      }
    });
  }
}