Run results for: JavaScript concat vs spread 2020

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/116.0

Browser: Firefox 116

Operating system: Windows

Device Platform: Desktop

Date tested: 8 months ago

Test name	Executions per second
.concat()	19141790.0 Ops/sec
spread	20559590.0 Ops/sec

Tests:

.concat()
const items = [5, 23] const newItems = [42] const updated = items.concat(newItems)
spread
const items = [5, 23] const newItems = [42] const updated = [...items, ...newItems]