Run results for: splice vs reduce

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:125.0) Gecko/20100101 Firefox/125.0

Browser: Firefox 125

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one month ago

Test name	Executions per second
splice	8825161.0 Ops/sec
if	15420270.0 Ops/sec

Tests:

splice
var t = ['a', 'b', 'c', 'd']; var last = t.splice(-1) var result = t.map(el => `<span>{$el}</span>`).concat(last)
if
var t = ['a', 'b', 'c', 'd']; var result = t.map((el, index, list) => index < list.length - 1 ? `<span>${el}</span>` : el)