Run results for: lodash.mapKeys vs Iterating over Object.keys

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.66 Safari/537.36

Browser: Chrome 66

Operating system: Mac OS X 10.12.6

Device Platform: Other

Date tested: 6 years ago

Test name	Executions per second
lodash.mapKeys	459885.3 Ops/sec
native	263988.2 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/lodash/4.16.0/lodash.min.js"></script>

Script Preparation code:

var value = {a: 30310, b: 100303, c: 3040494};

Tests:

lodash.mapKeys
_.mapKeys(value, k => k + '-changed')
native
Object.assign({}, ...Object.keys(value).map(k => ({ [k + '-changed']: value[k] })))