Run results for: Object.create(null) vs {} / Nullish coalescing assignment

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

{}

475/s

Object.create(null);

420/s

View exact numbers

Test name	Executions per second
✓ {}	475 Ops/sec
Object.create(null);	420 Ops/sec

Tests:

Object.create(null);
const obj = Object.create(null); for (i = 0; i < 100_000; i++) { obj[i] ??= i; }
{}
const obj = {}; for (i = 0; i < 100_000; i++) { obj[i] ??= i; }