Run results for: DefineProperties vs assignment

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36 Edg/139.0.0.0

Browser: Chrome 139

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

assignment

4K/s

Define properties

453/s

View exact numbers

Test name	Executions per second
✓ assignment	3,960 Ops/sec
Define properties	453 Ops/sec

Tests:

Define properties
for (var i=0; i<10000; i++) { const x = Object.defineProperties(Object.create(null), { ns: {value: "ns"}, tags: {value: Object.create(null)}}); }
assignment
for (var i=0; i<10000; i++) { const x = Object.create(null) x.ns = "ns" x.tags = Object.create(null); }