Benchmark: Array .concat() vs .unshift()

Script Preparation code:

var arr = []

Tests:

Rendered benchmark preparation results:

Previous results

Test case name	Result
arr.unshift(42)
[42].concat(arr)

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Browser/OS: Chrome 83 on Mac OS X 10.15.5

Test name	Executions per second
arr.unshift(42)	26330.9 Ops/sec
[42].concat(arr)	1664.0 Ops/sec

Array .concat() vs .unshift() (version: 0)