Run results for: Concat VS Spread operator benchmark

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36

Browser: Chrome 71

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Spread	76625.7 Ops/sec
Concat	75063.0 Ops/sec

Tests:

Spread
const array1 = [1, 3, 9]; const array2 = [2, 9, 4]; console.log(mergeSort(array1, array2)); function mergeSort(array1, array2) { let mergedArray = [...array1, ...array2]; return mergedArray.sort((a,b) => a-b); }
Concat
const array1 = [1, 3, 9]; const array2 = [2, 9, 4]; console.log(mergeSort(array1, array2)); function mergeSort(array1, array2) { let mergedArray = array1.concat(array2); return mergedArray.sort((a,b) => a-b); }