Harmony Proxy Benchmark

proxy_bench.js

var noop = function(){};
var obj = {
  '1':function(){ console.log(1) },
  '10':function(){ console.log(10) },
  '100':function(){ console.log(100) },
  '1000':function(){ console.log(1000) },
  '10000':function(){ console.log(10000) }
};

console.time('checking');
for(var i = 0; i < 10000000; i += 1){
  if(i in obj){
    obj[i]();
  } else {
    noop();
  }
}
console.timeEnd('checking');

var proxy = Proxy.create({
  getOwnPropertyDescriptor: function(name){ return Object.getOwnPropertyDescriptor(obj); },
  getPropertyDescriptor:    function(name){ return Object.getOwnPropertyDescriptor(obj); },
  getOwnPropertyNames:      function(){ return Object.getOwnPropertyNames(obj); },
  getPropertyNames:         function(){ return Object.getOwnPropertyNames(obj); },
  get:                      function(recv, name){ return obj[name] || noop; }
}, obj);

console.time('proxy');
for(var i = 0; i < 10000000; i += 1){
  proxy[i]();
}
console.timeEnd('proxy');

results

$ node --harmony-proxies proxy_bench.js 
1
10
100
1000
10000
checking: 418ms
1
10
100
1000
10000
proxy: 4680ms