Benchmark: concat vs spread .

Script Preparation code:

var array1 = Array(1_000).fill(1).map((_, i) => i % 2);
var array2 = Array(1_000).fill(0).map((_, i) => i % 2);

Tests:

Rendered benchmark preparation results:

Previous results

Test case name	Result
concat
spread

ⓘ Get performance results from real users on your website with Request Metrics.

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/112.0

Browser/OS: Firefox 112 on Mac OS X 10.15

Test name	Executions per second
concat	35811.3 Ops/sec
spread	26434.9 Ops/sec

concat vs spread . (version: 2)