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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 11_3_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.90 Safari/537.36

Browser: Chrome 89

Operating system: Mac OS X 11.3.1

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
filter().map()	240.2 Ops/sec
flatMap()	69.0 Ops/sec

Script Preparation code:

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

Tests: