Run results for: Passing objects with raw values vs passing just raw values vs array of values spread

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36 Edg/134.0.0.0

Browser: Chrome 134

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Pass object

17.7M/s

Pass raw values

17.6M/s

Pass array

17.1M/s

View exact numbers

Test name	Executions per second
✓ Pass object	17,710,850 Ops/sec
Pass raw values	17,628,134 Ops/sec
Pass array	17,068,334 Ops/sec

Script Preparation code:

var a = "Here's a string value";
var b = 5; // and a number
var c = false;

var object = {
  a, b, c
}

var array = [
  a, b, c
];

var passObject = ({a,b,c}) => {
  return a.length + b * c ? 2 : 1;
}

var passRawValues = (val_a, val_b, val_c) => {
  return val_a.length + val_b * val_c ? 2 : 1;
}

var passArray = ([a,b,c]) => {
  return a.length + b * c ? 2 : 1;
}


var x = 0;

Tests:

Pass object
x << 1; x ^= passObject(object);
Pass raw values
x << 1; x ^= passRawValues(a, b, c);
Pass array
x << 1; x ^= passArray(array);

Run results for: Passing objects with raw values vs passing just raw values vs array of values spread

Updated because it looks like Firefox optimizes away the entire test

Pass object

Pass raw values

Pass array