Run results for: flat vs flatMap vs reduce vs dumb

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36

Browser: Chrome 105

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Script Preparation code:

var arr = Array(10_000).fill(Array(20).fill(Math.random()*50))

Tests:

reduce
arr.reduce((acc, val) => acc.concat(val), [])
flatMap
arr.flatMap(x => x)
flat
arr.flat()
dumb
arr.reduce((acc, val) => { if (val) { val.forEach((x) => acc.push(x)); } return acc; }, [])