Benchmark: map vs obj xzdd - MeasureThat.net

Script Preparation code:

const data = new Array(1000000)
	.fill(1)
	.map((item) => Math.floor(Math.random() * 10000))

Tests:

Using the spread operator
const map = new Map(); data.forEach((item) => { map.set(item, Math.random()); });
Using Object.assign
const map = {} data.forEach((item) => { map[item] = Math.random(); });

Rendered benchmark preparation results:

Previous results

Test case name	Result
Using the spread operator
Using Object.assign

Latest run results:

Run details: (Test run date: 6 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36

Browser/OS: Chrome 144 on Mac OS X 10.15.7

Using Object.assign

110/s

Using the spread operator

46/s

View exact numbers

Test name	Executions per second
✓ Using Object.assign	110 Ops/sec
Using the spread operator	46 Ops/sec

map vs obj xzdd (version: 1)