Run results for: splice empty vs check first

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36

Browser: Chrome 92

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Splice	15217836.0 Ops/sec
Test first	132937912.0 Ops/sec

Tests:

Splice
const testArray = [1, 2, 3]; const emptyArray = []; const newTestArray = testArray.splice(testArray.length, 0, ...emptyArray);
Test first
const testArray = [1, 2, 3]; const emptyArray = []; if(emptyArray.length) { const newTestArray = testArray.splice(testArray.length, 0, ...emptyArray); }