Benchmark: Array.prototype.concat vs spread operator 2023

Tests:

Array.prototype.concat
const a = Array(1000).fill('a'); const b = Array(1000).fill('b'); const ab = a.concat(b);
Spread operator
const a = Array(1000).fill('a'); const b = Array(1000).fill('b'); const ab = [...a, ...b];

Rendered benchmark preparation results:

Previous results

Test case name	Result
Array.prototype.concat
Spread operator

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Latest run results:

Run details: (Test run date: 9 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser/OS: Chrome 119 on Windows

Test name	Executions per second
Array.prototype.concat	270227.5 Ops/sec
Spread operator	107061.3 Ops/sec

Array.prototype.concat vs spread operator 2023 (version: 0)