Run results for: if vs noop vs noop arrow vs void vs new Function

Run details:

User agent: Mozilla/5.0 (Android 13; Mobile; rv:109.0) Gecko/116.0 Firefox/116.0

Browser: Firefox Mobile 116

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
if	685605504.0 Ops/sec
noop	658258624.0 Ops/sec
noop arrow	657231168.0 Ops/sec
noop void	649788544.0 Ops/sec
noop2	124271.0 Ops/sec

Script Preparation code:

var undef = undefined;
var noop = function noop() {};
var noopArrow = () => {};
var noopVoid = void {};
var noop2 = function noop2() {
    const x = void {};
    return new Function("return x;"); // this `x` refers to global `x`
}

Tests:

if
if (undef) { undef(); }
noop
noop();
noop arrow
noopArrow();
noop void
noopVoid;
noop2
noop2();

Run results for: if vs noop vs noop arrow vs void vs new Function

if

noop

noop arrow

noop void

noop2