Run results for: flatMap vs reduce flattern array

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:151.0) Gecko/20100101 Firefox/151.0

Browser: Firefox 151

Operating system: Windows

Device Platform: Desktop

Date tested: 23 days ago

Test name	Executions per second
reduce with concat	13.0 Ops/sec
flatMap	4393.4 Ops/sec

Script Preparation code:

var arr = Array(10_000).fill([1, 2])

Tests: