Benchmark: reduce.concat() vs flat() vs concat + spread vs reduce + spread

Tests:

reduce + Array.prototype.concat
var params = [[ 1, 2 ], [ "hello", true, 7 ]]; var other = params.reduce((acc, val) => acc.concat(val), []);
Array.prototype.flat
var params = [[ 1, 2 ], [ "hello", true, 7 ]]; var other = params.flat();
concat + spread
var params = [[ 1, 2 ], [ "hello", true, 7 ]]; var other = [].concat(...params);
reduce + spread
var params = [[ 1, 2 ], [ "hello", true, 7 ]]; var other = params.reduce((acc, val) => { acc.push(...val); return acc; }, []);

Rendered benchmark preparation results:

Previous results

Test case name	Result
reduce + Array.prototype.concat
Array.prototype.flat
concat + spread
reduce + spread

Latest run results:

Run details: (Test run date: 5 months ago)

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Mobile Safari/537.36 EdgA/142.0.0.0

Browser/OS: Chrome Mobile 142 on Android

Test name	Executions per second
reduce + Array.prototype.concat	5964733.5 Ops/sec
Array.prototype.flat	3442351.8 Ops/sec
concat + spread	6375704.5 Ops/sec
reduce + spread	11974121.0 Ops/sec

Related benchmarks:

reduce.concat() vs flat() vs concat + spread vs reduce + spread (version: 0)