Run results for: objects delete vs null vs undefined vs void 0 vs Object.create(null)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser: Chrome 136

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Tests:

null
var a = 999; for(var i = 0; i < 1000;i++) { const b = {a:null}; }
undefined
var a = 999; for(var i = 0; i < 1000;i++) { const b = {a: undefined}; }
Object.create(null)
var a = 999; for(var i = 0; i < 1000;i++) { const b = {a: Object.create(null)}; }
void 0
var a = 999; for(var i = 0; i < 1000;i++) { const b = {a: void 0}; }
delete
var a = 999; for(var i = 0; i < 1000;i++) { const b = {a: void 0}; delete b.a; }