Run results for: Object.fromEntries vs reduce vs reduce with spread

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36 Edg/92.0.902.78

Browser: Chrome 92

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Script Preparation code:

var arr = Array.from({ length: 100000 }).map((_, index) => index);

Tests:

Object.fromEntries
Object.fromEntries(arr.map(i => [i, i*2]))
reduce
arr.reduce((acc, curr) => { acc[curr] = curr * 2; return acc }, {})
reduce with spread
arr.reduce((acc, curr) => { return { ...acc, [curr]: curr * 2, } }, {})