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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36

Browser: Chrome 143

Operating system: Linux

Device Platform: Desktop

Date tested: 6 months ago

Test name	Executions per second
Test length	212702448.0 Ops/sec
Test at	190131504.0 Ops/sec

Script Preparation code:

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

Tests: