Run results for: Proxy setter with sub operation v. class

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.101 Safari/537.36

Browser: Chrome 91

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Object setter	7844666.0 Ops/sec
Proxy setter	2573745.0 Ops/sec
Proxy with set handler	1277637.0 Ops/sec

Script Preparation code:

var c = 0;
object = {};
class p {
    set value(v){
         if (c++%7==0) v += c;
        this._value = v;
    }
}
proxy = new p();
proxyWithHandler = new Proxy(object, {
	set(target, prop, receiver) {
        if (c++%7==0) prop += c;
    	return Reflect.set(target, prop, receiver);
    }
})

Tests:

Object setter
object.value = 'data';
Proxy setter
proxy.value = 'data';
Proxy with set handler
proxyWithHandler.value = 'data';

Run results for: Proxy setter with sub operation v. class

Object setter

Proxy setter

Proxy with set handler