Benchmark: JavaScript concat vs spread 2020

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]

Rendered benchmark preparation results:

Previous results

Test case name	Result
.concat()
spread

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Latest run results:

Run details: (Test run date: 8 months ago)

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

Browser/OS: Firefox 116 on Windows

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

JavaScript concat vs spread 2020 (version: 0)