Benchmark: push vs spread vs concat two big arrays 1000000

Tests:

push
const n = 1000000; const a1 = Array(n).fill(2); const a2 = Array(n).fill(3); a1.push(...a2);
spread
const n = 1000000; const a1 = Array(n).fill(2); const a2 = Array(n).fill(3); [...a1,...a2]
concat
const n = 1000000; const a1 = Array(n).fill(2); const a2 = Array(n).fill(3); a1.concat(a2);

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36

Browser/OS: Chrome 70 on Windows

push vs spread vs concat two big arrays 1000000 (version: 0)