Run results for: _.isEmpty vs Object.keys.length 1

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36

Browser: Chrome 70

Operating system: Linux

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
_.isEmpty	1744654.0 Ops/sec
Object.keys().length	1954276.0 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.11/lodash.min.js"></script>

Script Preparation code:

window.obj = {};

for (var i = 0, len = 5; i < len; i++) {
  obj['key' + i] = 'value' + i;
}

Tests: