Run results for: string map vs. for search small arr

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
string map	458648.8 Ops/sec
find	26188316.0 Ops/sec

Script Preparation code:

globalThis.map = []
globalThis.objArr = []

for (let i = 0; i < 20; i++) {
    map[`thing-${i}`] = { i }
    objArr.push({ i })
}

Tests:

string map
const v = map['thing-5']; console.log(v) delete map['thing-5'];
find
for (let i = objArr.length - 1; i >= 0; i--) { const v = objArr[i] if (v.i === 5) { objArr.splice(i, 1) console.log(v) return v } }