Run results for: JavaScript spread operator vs Object.assign (with empty object parameter)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.1 Safari/605.1.15

Browser: Safari 14

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Spread Operator	8274645.5 Ops/sec
Object.assign (with empty object parameter)	1975256.2 Ops/sec

Tests:

Spread Operator
const firstObj = { id: 1, code: "1" }; const secondObj = { id: 2, code: "2" }; const finalObj = { ...firstObj, ...secondObj };
Object.assign (with empty object parameter)
const firstObj = { id: 1, code: "1" }; const secondObj = { id: 2, code: "2" }; const finalObj = Object.assign( {}, firstObj, secondObj );