Run results for: reduce.concat() vs flat() vs spread concat()

Run details:

User agent: Mozilla/5.0 (Linux; Android 13; SM-G998U) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.175 Mobile Safari/537.36

Browser: Chrome Mobile 96

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
reduce + Array.prototype.concat	5714173.0 Ops/sec
Array.prototype.flat	940260.8 Ops/sec
spread concat	5712640.0 Ops/sec

Tests:

reduce + Array.prototype.concat
var params = [[ "a", "b" ], [ "c", "d", "e" ]]; var other = params.reduce((acc, val) => acc.concat(val), []);
Array.prototype.flat
var params = [[ "a", "b" ], [ "c", "d", "e" ]]; var other = params.flat();
spread concat
var params = [[ "a", "b" ], [ "c", "d", "e" ]]; var other = ([]).concat(...params);