Run results for: lodash mapValues

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:136.0) Gecko/20100101 Firefox/136.0

Browser: Firefox 136

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

native for

15.0M/s

native forEach

14.1M/s

Native reduce

13.9M/s

Lodash

12.5M/s

View exact numbers

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

users = {
   'fred':    { 'user': 'fred',    'age': 40 },
   'pebbles': { 'user': 'pebbles', 'age': 1 }
};

Tests:

Lodash
_.mapValues(users, ({ age }) => age);
Native reduce
const keys = _.keys(users); keys.reduce((acc, key) => { acc[key] = users[key].age; return acc; }, {});
native for
const keys = _.keys(users); const len = keys.length; const result = {}; for (let index = 0; index < len; index++) { result[keys[index]] = users[keys[index]].age; }
native forEach
const keys = _.keys(users); const result = {}; keys.forEach(key => { result[key] = users[key].age; });