Run results for: sumby with reduce vs by mapping first

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
map first	315.9 Ops/sec
just reduce	1035.9 Ops/sec

Script Preparation code:

const arr = Array.from({ length: 100000 }, () => ({ rand: Math.random() }));

Tests:

map first
var b = arr.map((obj) => obj.rand).reduce((acc, curr) => acc + curr, 0);
just reduce
var b = arr.reduce((acc, curr) => acc + curr.rand, 0)