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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.81 Safari/537.36 Edg/92.0.902.40

Browser: Chrome 92

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
filter().map()	417.9 Ops/sec
flatMap()	77.2 Ops/sec

Script Preparation code:

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

Tests: