Run results for: Object.fromEntries(Array.map) vs Array.reduce (with different methods)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Browser: Chrome 128

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 10 days ago

Test name	Executions per second
Object.fromEntries(array.map)	2415.2 Ops/sec
Array.reduce (reuse same object)	17950.7 Ops/sec
Array.reduce (use Object.assign)	238.3 Ops/sec
Array.reduce (use destructuring)	115.4 Ops/sec

Script Preparation code:

var array = Array.from(Array(10000).keys()).map((i) => ({
    id: i,
    count: i * 100,
}))

Tests:

Object.fromEntries(array.map)
Object.fromEntries(array.map(({ id, count }) => [id, count]));
Array.reduce (reuse same object)
array.reduce((obj, { id, count }) => { obj[id] = count; return obj; }, {});
Array.reduce (use Object.assign)
array.reduce((obj, { id, count }) => Object.assign(obj, { [id]: count }), {});
Array.reduce (use destructuring)
array.reduce((obj, { id, count }) => ({ ...obj, [id]: count }), {});