Run results for: Array concat vs spread operator vs push (reduce)

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.3 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 16

Operating system: iOS 16.3.1

Device Platform: Mobile

Date tested: one year ago

Script Preparation code:

var source = Array.from({ length: 1000 }, (_, index) => index + 1);

Tests:

Array.prototype.concat
source.reduce((acc, cur) => { acc = acc.concat(cur + cur); return acc; }, [])
spread operator
source.reduce((acc, cur) => { acc = [...acc, cur + cur]; return acc; }, [])
Push
source.reduce((acc, cur) => { acc.push(cur + cur); return acc; }, [])