Benchmark: Array concat vs spread vs push spread, loop, apply for of

Script Preparation code:

var subarrs = [
 [ "hello", true, 7 ],
 [ "yes", "no", "maybe", false, 27 ],
 [ 16, "I", "wonder", "what", "will", "be", "fastest"]
];

Tests:

Array.prototype.concat
var other = [ ] for (const subarr of subarrs){ other = other.concat(subarr); } return other;
spread operator
let other = [ ] for (const subarr of subarrs){ other = [ ...other, ...subarr ] } return other;
Push Loop
var other = [ ] for (const subarr of subarrs){ for (const value of subarr){ other.push(value); } } return other;

Rendered benchmark preparation results:

Previous results

ⓘ Get performance results from real users on your website with Request Metrics.

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36

Browser/OS: Chrome 108 on Mac OS X 10.15.7

Array concat vs spread vs push spread, loop, apply for of (version: 0)