Run results for: Array mutation VS creation

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/119.0

Browser: Firefox 119

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
new array	15202711.0 Ops/sec
mutation	33625660.0 Ops/sec

Tests:

const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];
const arr1 = [0, ...arr];

AخA
 
const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];const arr1 = [0, ...arr];

const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];
arr.unshift(0);

 
const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];arr.unshift(0);