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

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();
concat using decomposition
var params = [[ 1, 2 ], [ "hello", true, 7 ]]; var other = [].concat(...params);

Rendered benchmark preparation results:

Previous results

Test case name	Result
reduce + Array.prototype.concat
Array.prototype.flat
concat using decomposition

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Latest run results:

Run details: (Test run date: 4 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.4 Safari/605.1.15

Browser/OS: Safari 16 on Mac OS X 10.15.7

Test name	Executions per second
reduce + Array.prototype.concat	14910420.0 Ops/sec
Array.prototype.flat	7765278.0 Ops/sec
concat using decomposition	9287406.0 Ops/sec

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