Run results for: class object creation: with field declaration vs not

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36

Browser: Chrome 115

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
no declaration	6493.6 Ops/sec
declaration and constructor	528.5 Ops/sec

Tests:

no declaration
class SomeClass { constructor(one) { this.one = one } } for (var i = 0; i < 10_000; i++) { const obj = new SomeClass(2) }
declaration and constructor
class SomeClass { one constructor(one) { this.one = one } } for (var i = 0; i < 10_000; i++) { const obj = new SomeClass(2) }