Run results for: arr unshift vs double reverse

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36

Browser: Chrome 87

Operating system: Mac OS X 10.14.5

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
unshift	45115.6 Ops/sec
reverse push reverse	3927.3 Ops/sec

Script Preparation code:

var arr = [42];

Tests: