Run results for: arr vs indexaction

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: one year ago

Test name	Executions per second
indexation	24273.1 Ops/sec
arr	682542.1 Ops/sec

Tests:

let arr = {}

for (let i=0; i<500; i++) {
arr = { ...arr, [+i]: { id: +i, foo: 'bar'}}
}

const test = arr[40]

​x
 
let arr = {}​for (let i=0; i<500; i++) {arr = { ...arr, [+i]: { id: +i, foo: 'bar'}}}​const test = arr[40]

const arr = []

for (let i=0; i<500; i++) {
arr.push({ id: +i, foo: 'bar'})
}

const test = arr.find(x => x.id === 40)

 
const arr = []​for (let i=0; i<500; i++) {arr.push({ id: +i, foo: 'bar'})}​const test = arr.find(x => x.id === 40)