Run results for: arr.at(-1) vs arr[arr.length-1]

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser: Chrome 123

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Test length	13114113.0 Ops/sec
Test at	23790740.0 Ops/sec

Script Preparation code:

var data = Array(1000000).fill({ filtering: true, mapping: 42 });

Tests: