Run results for: WeakMap vs property access vs symbol access

Run details:

User agent: Mozilla/5.0 (PC; OpenHarmony 5.0; HarmonyOS 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 ArkWeb/4.1.6.1 HuaweiBrowser/5.0.6.301

Browser: Chrome 114

Operating system: Other

Device Platform: Desktop

Date tested: 6 days ago

Test name	Executions per second
WeakMap.get	62846832.0 Ops/sec
object[prop]	91950216.0 Ops/sec
object[symbol]	88166064.0 Ops/sec
object.a	94796600.0 Ops/sec

Script Preparation code:

var weakMap = new WeakMap()
var symbol = Symbol('next');
var prop = 'a';

var object = { [prop]: 1, [symbol]: 1 };
weakMap.set(object, 1);

Tests:

WeakMap.get
weakMap.get(weakMap)
object[prop]
object[prop]
object[symbol]
object[symbol]
object.a
object.a

Run results for: WeakMap vs property access vs symbol access

WeakMap.get

object[prop]

object[symbol]

object.a