Benchmark: var array = [1,2,3];

Tests:

var z = array.at(-1);
var array = [1,2,3]; var aaa = array.at(-1);
selectedAssetKeys.slice(-1)?.[0]
var array = [1,2,3]; var bbb = array.slice(-1)?.[0]

Rendered benchmark preparation results:

Previous results

Test case name	Result
var z = array.at(-1);
selectedAssetKeys.slice(-1)?.[0]

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Latest run results:

Run details: (Test run date: one month ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:125.0) Gecko/20100101 Firefox/125.0

Browser/OS: Firefox 125 on Windows

Test name	Executions per second
var z = array.at(-1);	149524300.0 Ops/sec
selectedAssetKeys.slice(-1)?.[0]	54720650.0 Ops/sec

var array = [1,2,3]; (version: 0)