Benchmark: Getter / Setter vs Proxy vs Events

Script Preparation code:

data1 = {};
handler = {
  get: (target, prop) => (target[prop]),
  set: (target, prop, value) => (target[prop] = value),
};
proxy = new  Proxy(data1, handler);
data2 = {
  get test() {
    return this._test;
  },
  set test(value) {
    return this._test = value;
  }
};
const EVENTS = new WeakMap();
function pub(object, event, data) {
  if (!EVENTS.has(object)) { return; }
  const callbacks = EVENTS.get(object)[event];
  if (callbacks) {
    for (const callback of callbacks) {
      callback(data);
    }
  }
}
function sub(object, event, callback) {
  let dict;
  if (!EVENTS.has(object)) {
    EVENTS.set(object, dict={});
  } else {
    dict = EVENTS.get(object);
  }
  let evList;
  if (event in dict) {
    (evList = dict[event]).push(callback);
  } else {
    evList = dict[event] = [callback];
  }
  return function unsub() {
    evList.splice(evList.indexOf(callback), 1);
  }
}
data3 = {};
sub(data3, 'set-test', v => data3.test = v);
sub(data3, 'get-test', () => pub(data3, 'getting-test', data3.test));
sub(data3, 'getting-test', v => a += v);
var a = 0;
data4 = {};
data5 = {};
sub(data5, 'set-test', v => { data5.test = v; pub(data5, 'getting-test', data3.test); });
sub(data5, 'getting-test', v => a += v);

Tests:

getter / setter
data2.test = Math.random(); a += data2.test;
proxy
proxy.test = Math.random(); a += proxy.test;
events
pub(data3, 'set-test', Math.random()); pub(data3, 'get-test');
plain object
data4.test = Math.random(); a += data4.test;
events (kinda cheating)
// note that is almost certainly not accurate since it probably ends after this function is called, not when getting-test triggers pub(data3, 'set-test', Math.random());

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
getter / setter
proxy
events
plain object
events (kinda cheating)

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 3 days ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser/OS: Chrome 123 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
getter / setter	2632578.0 Ops/sec
proxy	2997401.0 Ops/sec
events	1302050.0 Ops/sec
plain object	3298368.0 Ops/sec
events (kinda cheating)	3377424.0 Ops/sec

Getter / Setter vs Proxy vs Events (version: 2)

Comparing performance of: getter / setter vs proxy vs events vs plain object vs events (kinda cheating)

Created: 3 years ago by: Registered User

Jump to the latest result

getter / setter

proxy

events

plain object

events (kinda cheating)

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A