Benchmark: nested spread vs forEach push

Script Preparation code:

const arrNested = Array.from(Array(1000).keys());
const arr = new Array(1000).fill(null).map((item) => ({
	nested: [...arrNested],
}));

Tests:

spread
const resultSpread = []; arr.forEach((item) => { resultSpread.push(...item.nested); });
forEach push
const resultNestedLoop = []; arr.forEach((item) => { item.nested.forEach((nestedItem) => resultNestedLoop.push(nestedItem)); });

Rendered benchmark preparation results:

Previous results

Test case name	Result
spread
forEach push

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser/OS: Chrome 133 on Mac OS X 10.15.7

Test name	Executions per second
spread	372.1 Ops/sec
forEach push	266.9 Ops/sec

Related benchmarks:

nested spread vs forEach push (version: 1)