Run results for: Concat vs flatmapa

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.5 Safari/605.1.15

Browser: Safari 15

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
concat	1220.7 Ops/sec
flatmap	1067.2 Ops/sec

Tests:

concat
ids = Array.from(Array(1000).keys()); [].concat(...ids.map(a => Array.from(Array(100).keys())));
flatmap
ids = Array.from(Array(1000).keys()); ids.flatMap(a => Array.from(Array(100).keys()));