Run results for: flatMap vs reduce filtering performance

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:135.0) Gecko/20100101 Firefox/135.0

Browser: Firefox 135

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

reduce with push

24K/s

flatMap

6K/s

View exact numbers

Test name	Executions per second
✓ reduce with push	24,290 Ops/sec
flatMap	5,755 Ops/sec

Script Preparation code:

var arr = Array.from({length:10000}, (v, i) => ({name: i, assigned: Math.random() < 0.5}));

Tests: