Run results for: Spread Operator VS Object.assign performance analysis

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 Edg/105.0.1343.50

Browser: Chrome 105

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Spread Operator	62489612.0 Ops/sec
Object.assign	3430269.2 Ops/sec

Tests:

Spread Operator
const state = { a: 1, b: 2 }; return { ...state, a: 2, b: 1 };
Object.assign
const state = { a: 1, b: 2 }; return Object.assign({}, { ...state, a:2, b: 1 });