Run results for: Object Assign vs Manual Assign

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 14_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 14

Operating system: iOS 14.2.1

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
Object Assign	27.6 Ops/sec
Manual Assign	12743.4 Ops/sec

Tests:

Object Assign
function hello(v) { Object.assign(v, {a:1,b:2,c:3,d:4}) } for (let i = 0; i < 100000; i++) { hello({}) }
Manual Assign
function hello(v) { v.a = 1 v.b = 2 v.c = 3 v.d = 4 } for (let i = 0; i < 100000; i++) { hello({}) }