Run results for: Check JS spread operator vs Object.assign performance

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Browser: Chrome 124

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Object.assign	4141319.0 Ops/sec
Spread	8388081.5 Ops/sec

Tests:

Object.assign
const a = { 'a': '1', 'b1': '2', 'b2': '2', 'b3': '2', 'b4': '2', 'b5': '2', } const b = { 'a': '2', 'c': '3', } const c = { 'a': '3', } const finalObject = Object.assign({}, {a, b,c });
Spread
const a = { 'a': '1', 'b1': '2', 'b2': '2', 'b3': '2', 'b4': '2', 'b5': '2', } const b = { 'a': '2', 'c': '3', } const c = { 'a': '3', } const finalObject = { ...a, ...b, ...c };