Run results for: weakmap vs object properties

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

object properties

615.5M/s

weakmap

11.9M/s

View exact numbers

Test name	Executions per second
✓ object properties	615,450,752 Ops/sec
weakmap	11,912,323 Ops/sec

Tests:

weakmap
const map = new WeakMap() const key = { aa:123 } const value = { bb:321 } map.set(key,value) map.get(key)
object properties
const key = { aa:123 } key._value = { bb:321 } void key._value