Run results for: object.assign vs spread to new object

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36 Edg/133.0.0.0

Browser: Chrome 133

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

spread to empty

109.0M/s

object.assign to empty

47.4M/s

View exact numbers

Test name	Executions per second
✓ spread to empty	108,973,552 Ops/sec
object.assign to empty	47,400,856 Ops/sec

Tests:

spread to empty
const firstObject = { sampleData: 'Hello world' } const finalObject = { ...firstObject, };
object.assign to empty
const firstObject = { sampleData: 'Hello world' } const finalObject = Object.assign({}, firstObject)