Run results for: spread vs concat vs unshift

Run details:

User agent: Mozilla/5.0 (Linux; Android 11; SAMSUNG SM-G991N) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/15.0 Chrome/90.0.4430.210 Mobile Safari/537.36

Browser: Chrome Mobile 90

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
arrayUnshift123	16001.4 Ops/sec
arrayConcat123	691.3 Ops/sec
arraySpread123	143.8 Ops/sec

Script Preparation code:

var array = [1,2,3];

Tests:

arrayUnshift123
array.unshift(0);
arrayConcat123
array = array.concat([0])
arraySpread123
array = [0, ...array]

Run results for: spread vs concat vs unshift

spread vs concat vs unshift

arrayUnshift123

arrayConcat123

arraySpread123