Run results for: reduce object vs object.fromentries (1K records)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Browser: Chrome 127

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Object.fromEntries

172.3M/s

reduce

168.0M/s

View exact numbers

Test name	Executions per second
✓ Object.fromEntries	172,292,608 Ops/sec
reduce	167,998,288 Ops/sec

Script Preparation code:

const array = Array.from({ length: 1000 }, (_, i) => ({ key: `key${i}`, value: i }));

Tests:

reduce
function reduce() { return array.reduce((acc, { key, value }) => { acc[key] = value; return acc; }, {}); }
Object.fromEntries
function objectFromEntries() { return Object.fromEntries(array.map(({ key, value }) => [key, value])); }