Run results for: Freezing objects and arrays

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36 Edg/138.0.0.0

Browser: Chrome 138

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Arrays

88.8M/s

Objects

88.5M/s

Freeze objects

30.5M/s

Freeze arrays

30.3M/s

View exact numbers

Test name	Executions per second
✓ Arrays	88,782,408 Ops/sec
Objects	88,484,192 Ops/sec
Freeze objects	30,461,158 Ops/sec
Freeze arrays	30,344,254 Ops/sec

HTML Preparation code:

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

Script Preparation code:

/*your preparation JavaScript code goes here
To execute async code during the script preparation, wrap it as function globalMeasureThatScriptPrepareFunction, example:*/
async function globalMeasureThatScriptPrepareFunction() {
    // This function is optional, feel free to remove it.
    // await someThing();
}
const store = { _: null };
function do_not_optimize(v) { store._ = v; }

Tests:

Freeze arrays
let x = Object.freeze([1, 2, 3, 4, 5]); do_not_optimize(x);
Arrays
let x = [1, 2, 3, 4, 5]; do_not_optimize(x);
Freeze objects
let x = Object.freeze({ x: 1, y: 2, z: 3, a: 4, b: 5 }); do_not_optimize(x);
Objects
let x = { x: 1, y: 2, z: 3, a: 4, b: 5 }; do_not_optimize(x);