Run results for: Class property - delete vs undefined

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 14_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.3 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 14

Operating system: iOS 14.4.1

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
delete	3968848.0 Ops/sec
undefined	2827790.0 Ops/sec

Tests:

delete
class test { prop = 'test'; clear() { delete this.prop; } } new test().clear();
undefined
class test { prop = 'test'; clear() { this.prop = undefined; } } new test().clear();