Run results for: reduce.concat() vs flat() vs [].concat(...arr)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.99 Safari/537.36

Browser: Chrome 97

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
reduce + Array.prototype.concat + [].concat	3640877.2 Ops/sec
Array.prototype.flat	969910.2 Ops/sec
[].concat	7216886.0 Ops/sec

Tests:

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