Benchmark: forEach concat vs reduce push vs forEach push vs reduce concat performance test

Tests:

forEach concat
var a = [{nested: [ "hello", true, 7 ]}, {nested: [ 1, 2 ]}]; let b = []; a.forEach((item) => { b = b.concat(item.nested); });
Reduce push
var a = [{nested: [ "hello", true, 7 ]}, {nested: [ 1, 2 ]}]; const b = a.reduce((acc, item) => { acc.push(...item.nested); return acc }, []);
Reduce concat
var a = [{nested: [ "hello", true, 7 ]}, {nested: [ 1, 2 ]}]; const b = a.reduce((acc, item) => { acc.concat(item.nested); return acc }, []);
forEach push
var a = [{nested: [ "hello", true, 7 ]}, {nested: [ 1, 2 ]}]; let b = []; a.forEach((item) => { b.push(...item.nested); });

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/97.0.4692.71 Safari/537.36

Browser/OS: Chrome 97 on Windows

forEach concat vs reduce push vs forEach push vs reduce concat performance test (version: 0)