Benchmark: 2spread vs concat vs unshift23

Tests:

arrayUnshift123
var array = [1,2,3]; array.unshift(0, 5, 9); if (array.length != 6) throw Error("Unfair")
arrayConcat123
var array = [1,2,3]; array = array.concat([0, 5, 9]) if (array.length != 6) throw Error("Unfair")
arraySpread123
var array = [1,2,3]; array = [0, 5, 9, ...array] if (array.length != 6) throw Error("Unfair")

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36

Browser/OS: Chrome 70 on Mac OS X 10.14.1

2spread vs concat vs unshift23 (version: 0)