Benchmark: Concat vs Spread vs flat

Tests:

concat
const a = [1,2,3,4,5,6,7,8,9,0]; const b = [1,2,3,4,5,6,7,8,9,0]; const result = a.concat(b);
spread
const a = [1,2,3,4,5,6,7,8,9,0]; const b = [1,2,3,4,5,6,7,8,9,0]; const result = [...a, ...b];
flat
const a = [1,2,3,4,5,6,7,8,9,0]; const b = [1,2,3,4,5,6,7,8,9,0]; const result = [a,b].flat();

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36 Edg/95.0.1020.40

Browser/OS: Chrome 95 on Windows

Concat vs Spread vs flat (version: 0)