Run results for: Object.defineProperty vs direct assignment

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:135.0) Gecko/20100101 Firefox/135.0

Browser: Firefox 135

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
a	9395.0 Ops/sec
b	11331.8 Ops/sec

Tests:

a
let target = {}; let key = 'something'; for (let i = 0; i < 1000; i++) { Object.defineProperty(target, key + i, {value: i}); }
b
let target = {}; let key = 'something'; for (let i = 0; i < 1000; i++) { target[key + i] = i; }