Run results for: undefined vs delete

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 13_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/83.0.4103.88 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 83

Operating system: iOS 13.5

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
delete	23016820.0 Ops/sec
undefined	8165169.0 Ops/sec

Tests:

delete
const obj = {one: "hello"} delete obj.one;
undefined
const obj = {one: "sunshine"} obj.one = undefined;