Run results for: JavaScript spread operator vs Object.assign performance (clone)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Using the spread operator

52.0M/s

Using Object.assign

36.8M/s

View exact numbers

Test name	Executions per second
✓ Using the spread operator	52,045,312 Ops/sec
Using Object.assign	36,823,560 Ops/sec

Tests:

Using the spread operator
const firstObject = { a: 1, b: 2, c: 3, d: 4 } const finalObject = { ...firstObject };
Using Object.assign
const firstObject = { a: 1, b: 2, c: 3, d: 4 } const finalObject = Object.assign({}, firstObject);