Benchmark: Frozen object access vs ordinary object access

Script Preparation code:

const obj = {a: 1, b: 2, c: 3, d: 4};
const sealedObj = Object.freeze({a: 1, b: 2, c: 3, d: 4, __proto__: null});

let v = null;

Tests:

Frozen object access
v = sealedObj.a; v = sealedObj.b; v = sealedObj.c; v = sealedObj.d;
Ordinary object access
v = obj.a; v = obj.b; v = obj.c; v = obj.d;

Rendered benchmark preparation results:

Previous results

Test case name	Result
Frozen object access
Ordinary object access

Latest run results:

Run details: (Test run date: 7 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.2 Safari/605.1.15

Browser/OS: Safari 26 on Mac OS X 10.15.7

Frozen object access

316.6M/s

Ordinary object access

296.9M/s

View exact numbers

Test name	Executions per second
✓ Frozen object access	316,626,112 Ops/sec
Ordinary object access	296,862,848 Ops/sec

Frozen object access vs ordinary object access (version: 1)