Run results for: Object.freeze vs Object.seal

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_7_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.6.4 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 15

Operating system: iOS 15.7.3

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
normal	2424535.8 Ops/sec
freeze	2165519.0 Ops/sec
seal	2408046.8 Ops/sec

Script Preparation code:

var normal = {
  x: 0,
  y: 0
};
var freeze = Object.freeze({
  x: 0,
  y: 0
});
var seal = Object.seal({
  x: 0,
  y: 0
});

Tests:

normal
var t = normal.x; normal.x = normal.y; normal.y = t;
freeze
var t = freeze.x; freeze.x = freeze.y; freeze.y = t;
seal
var t = seal.x; seal.x = seal.y; seal.y = t;