Run results for: slice.map vs map

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.0 Safari/605.1.15

Browser: Safari 16

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
slice with map	4336584.5 Ops/sec
map only	1904135.9 Ops/sec

Script Preparation code:

var data = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0];

Tests:

slice with map
data.slice(0, 6).map(x => x + 1);
map only
data.map((x, i) => { if(i > 6) return null return x + 1 }).filter(Boolean);