Run results for: Brackets vs arrow function

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Browser: Chrome 126

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 10 months ago

Test name	Executions per second
Brackets	119585.3 Ops/sec
Arrow function	47567.2 Ops/sec

Tests:

Brackets

var acc = 0;
for (var i = 0; i < 10000; i++) {
  let value = 1;
  {
    let value = i;
    acc += value;
  };
  value++;
  if(value !== 2) throw 'error';
}

AخA
 
var acc = 0;for (var i = 0; i < 10000; i++) {  let value = 1;  {    let value = i;    acc += value;  };  value++;  if(value !== 2) throw 'error';}

Arrow function

var acc = 0;
for (var i = 0; i < 10000; i++) {
    let value = 1;
	(value => acc += value)(i);
    value++;
    if(value !== 2) throw 'error';
}

 
var acc = 0;for (var i = 0; i < 10000; i++) {    let value = 1;    (value => acc += value)(i);    value++;    if(value !== 2) throw 'error';}