Run results for: flatMap() vs map() and flat()

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:144.0) Gecko/20100101 Firefox/144.0

Browser: Firefox 144

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 9 months ago

map().flat()

557/s

flatMap()

520/s

View exact numbers

Test name	Executions per second
✓ map().flat()	557 Ops/sec
flatMap()	520 Ops/sec

Script Preparation code:

var arr = [];
var i = 0;

while (i <= 1E5) arr[i] = {
    num: [1, i++]
};

Tests: