Run results for: Object.create mutation vs Object.create mutation descriptors vs setPrototypeOf

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36

Browser: Chrome 115

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Object.create mutation	145891.4 Ops/sec
Object.create mutation descriptors	114859.0 Ops/sec
Test Object.assign	170631.1 Ops/sec

Script Preparation code:

for (i = 0; i < 10; i++) {}

Tests:

Object.create mutation
const proto = { m1() { return 4324 }, m2() { return "park"} }; const obj = Object.create(proto) obj.age = 65 obj.name = "john"
Object.create mutation descriptors
const proto = { m1() { return 4324 }, m2() { return "park"} }; const obj = Object.create(proto, Object.getOwnPropertyDescriptors({age: 65, name: "john"}));
Test Object.assign
const proto = { m1() { return 4324 }, m2() { return "park"} }; const obj = {age: 65, name: "john"} Object.setPrototypeOf(obj, proto);