Run results for: Object defineProperty on class

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Browser: Chrome 125

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
defineProperty	4393226.5 Ops/sec
Raw access	21905556.0 Ops/sec

Script Preparation code:

    var DefineProperty = /** @class */ (function () {
        function DefineProperty() {
            Object.defineProperty(this, "b", {
                enumerable: true,
                configurable: true,
                writable: true,
                value: 2
            });
        }
        return DefineProperty;
    }());
    var RawAccess = /** @class */ (function () {
        function RawAccess() {
            this.b = 2;
        }
        return RawAccess;
    }());

Tests:

defineProperty
var obj = new DefineProperty();
Raw access
var obj = new RawAccess()

Run results for: Object defineProperty on class

defineProperty

Raw access