Run results for: flatMap() vs filter().map()

Run details:

User agent: Mozilla/5.0 (Linux; Android 12; SM-G973F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.5790.167 Mobile Safari/537.36 OPR/77.3.4095.74759

Browser: Opera Mobile 77

Operating system: Android

Device Platform: Mobile

Date tested: 7 months ago

Test name	Executions per second
filter().map()	137.3 Ops/sec
flatMap()	70.0 Ops/sec

Script Preparation code:

var arr = [];
var i = 0;

while (i <= 1E5) arr[i] = i++;

Tests:

filter().map()
arr.filter(x => x % 3).map(x => x/100)
flatMap()
arr.flatMap(x => x % 3 ? x/100 : [])

Run results for: flatMap() vs filter().map()

flatMap vs filter map

filter().map()

flatMap()