Run results for: setPrototypeOf test [

Run details:

User agent: Mozilla/5.0 (X11; CrOS x86_64 14541.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Browser: Chrome 126

Operating system: Chrome OS 14541.0.0

Device Platform: Desktop

Date tested: 3 months ago

Test name	Executions per second
Reflect	6554.9 Ops/sec
Object	6469.4 Ops/sec
__proto__	6665.7 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

let obj = {__proto__: null,a:3,*[Symbol.iterator](){yield this.a; yield this.a;}, method(){return ''}, get getter(){return this.a}, set setter(val){this.a=val}}

Tests:

Reflect
for(let i = 300; i--;) { Reflect.setPrototypeOf(obj, Reflect.getPrototypeOf(obj)) obj.method() obj.setter = obj.getter; [...obj] }
Object
for(let i = 300; i--;) { Object.setPrototypeOf(obj, Object.getPrototypeOf(obj)) obj.method() obj.setter = obj.getter; [...obj] }
__proto__
for(let i = 300; i--;) { obj.__proto__ = obj.__proto__ obj.method() obj.setter = obj.getter; [...obj] }

Run results for: setPrototypeOf test [

Reflect

Object

__proto__

proto