Run results for: Large array to object mapping

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.193 Safari/537.36

Browser: Chrome 86

Operating system: Linux

Device Platform: Desktop

Date tested: 4 years ago

Script Preparation code:

array = Array.from(Array(10000).keys())

Tests:

Object spread
const resp = array.reduce( (acc, curr) => ({ ...acc, [curr]: curr }), {}, );
Object assign
const resp = array.reduce( (acc, curr) => Object.assign(acc, { [curr]: curr }), {} );
Object fromEntries
const resp = Object.fromEntries(array.map(curr => [curr, curr]));
forEach
const resp = {}; array.forEach(curr => resp[curr] = curr);
for loop
const resp = {}; for (const curr of array) { resp[curr] = curr; }