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

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; LM-G820N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Mobile Safari/537.36

Browser: Chrome Mobile 84

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
filter().map()	78.8 Ops/sec
flatMap()	27.9 Ops/sec

Script Preparation code:

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

Tests: