Run results for: spread array performance (vs slice, splice, concat)

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 12_4_1 like Mac OS X) AppleWebKit/604.1.34 (KHTML, like Gecko) CriOS/63.0.3239.73 Mobile/16G102 Safari/604.1

Browser: Chrome Mobile iOS 63

Operating system: iOS 12.4.1

Device Platform: Mobile

Date tested: 4 years ago

Test name	Executions per second
Splice	7444606.0 Ops/sec
Slice	31455310.0 Ops/sec
Concat	5338069.0 Ops/sec
Spread	55822930.0 Ops/sec

Tests:

Splice
const testArray = [1, 2, 3]; const newTestArray = testArray.splice(0);
Slice
const testArray = [1, 2, 3]; const newTestArray = testArray.slice();
Concat
const testArray = [1, 2, 3]; const newTestArray = testArray.concat();
Spread
const testArray = [1, 2, 3]; const newTestArray = [...testArray];

Run results for: spread array performance (vs slice, splice, concat)

Splice

Slice

Concat

Spread