Run results for: Array vs Object vs Map vs WeakMap access3

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.64 Safari/537.36 Edg/101.0.1210.47

Browser: Chrome 101

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Map.get	6315488.0 Ops/sec
WeakMap.get	6729500.0 Ops/sec

Script Preparation code:

var key = {}

var map = new Map();

map.set(key, Math.random())
for (let i = 0; i < 10000; i++) {
  map.set({}, Math.random())
}

var weakMap = new WeakMap()

const a = []
weakMap.set(key, Math.random())
for (let i = 0; i < 10000; i++) {
  const tkey = {}
  a.push(tkey)
  weakMap.set(tkey, Math.random())
}

Tests:

Map.get
map.get(key);
WeakMap.get
weakMap.get(key)

Run results for: Array vs Object vs Map vs WeakMap access3

Map.get

WeakMap.get