Run results for: Object from entries - Object.assign vs. spread vs. simple mutate

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36

Browser: Chrome 111

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Script Preparation code:

window.entries = [
  ['one', 1],
  ['two', 2],
  ['three', 3],
  ['four', 4],
  ['five', 5]
];

Tests:

Object.assign
window.entries.reduce((obj, [key, value]) => Object.assign(obj, {[key]: value}), {})
Spread
window.entries.reduce((obj, [key, value]) => ({...obj, [key]: value}), {})
Simple mutate
window.entries.reduce((obj, [key, value]) => { obj[key] = value; return obj; }, {})