Run results for: reduce.concat() vs flat(1) vs custom

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36

Browser: Chrome 87

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
reduce + Array.prototype.concat	2893541.0 Ops/sec
Array.prototype.flat	590489.3 Ops/sec
Custom flat	1750058.0 Ops/sec

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, params], [ "hello", true, 7 ]]; var other = params.flat(1);
Custom flat
const flat = (array, depth) => ((Number(depth) > 1) ? array.flat(depth) : array.reduce((a, v) => a.concat(v), [])); var params = [[1, 2, params], [ "hello", true, 7 ]]; var other = flat(params);