Run results for: Object.fromEntries vs reduce vs Map (from Array)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser: Chrome 122

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Object.fromEntries	2006.9 Ops/sec
Reduce (reuse object)	12886.8 Ops/sec
Reduce (creating temporary objects)	98.6 Ops/sec
Map	1900.3 Ops/sec

Script Preparation code:

var data = [...Array(10000).keys()].map((elem) => ({ original: elem, edited: elem + 1 }));

Tests:

Object.fromEntries
Object.fromEntries(data.map((elem) => [elem.original, elem]));
Reduce (reuse object)
data.reduce((acc, elem) => { acc[elem.original] = elem; return acc; }, {});
Reduce (creating temporary objects)
data.reduce((acc, elem) => ({ ...acc, [elem.original]: elem }), {});
Map
data.reduce((acc, elem) => { acc.set(elem.original, elem) return acc; }, new Map());