Run results for: reduce() vs map().filter() vs flatMap() -asadf

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36

Browser: Chrome 117

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
filter().map()	3778462.2 Ops/sec
flatMap()	652869.7 Ops/sec

Script Preparation code:

var arr = [];
var i = 0;

while (i <= 30) arr[i] = i++;

Tests:

map().filter()
arr.map(x => x/100).filter(x => x % 3)
reduce()
arr.reduce((acc, x) => { if (x % 3) acc.push(x/100); return acc; }, [])
flatMap
arr.flatMap(x => x % 3 ? x/100 : [])