Run results for: Array spread operator vs push, large list

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:147.0) Gecko/20100101 Firefox/147.0

Browser: Firefox 147

Operating system: Windows

Device Platform: Desktop

Date tested: 2 months ago

Test name	Executions per second
spread	22987.2 Ops/sec
push	1321015.5 Ops/sec

Script Preparation code:

window.startArray = [];
for (let i = 0; i < 100; i++) {
  startArray.push("El-" + i);
}

Tests:

spread
startArray.reduce((accumulator, currentValue) => { return [...accumulator, currentValue]; }, []);
push
startArray.reduce((accumulator, currentValue) => { accumulator.push(currentValue); return accumulator; }, []);