Benchmark: Array Concat vs (Push + Spread) vs Spread

Script Preparation code:

var arr1 = ["hello", "world", "test"];
var arr2 = [];
for (let i = 0; i < 500; i++) {
	arr2.push(Math.random());
}

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 (Macintosh; Intel Mac OS X 11_2_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.114 Safari/537.36

Browser/OS: Chrome 89 on Mac OS X 11.2.0

Array Concat vs (Push + Spread) vs Spread (version: 0)