Benchmark: spread vs concat vs unshift larger arrays

Script Preparation code:

var array = Array.from(Array(1000).keys());
var array2 = Array.from(Array(20).keys())

Tests:

Rendered benchmark preparation results:

Previous results

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Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:80.0) Gecko/20100101 Firefox/80.0

Browser/OS: Firefox 80 on Windows

spread vs concat vs unshift larger arrays (version: 0)