Run results for: flatMap vs reduce using push spread

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.71 Safari/537.36 Edg/97.0.1072.55

Browser: Chrome 97

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
reduce with concat	5296.3 Ops/sec
flatMap	377.9 Ops/sec

Script Preparation code:

var arr = Array(10_000).fill({arr: [0,1]})

Tests: