Run results for: isFunction vs typeof function 2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36

Browser: Chrome 69

Operating system: Mac OS X 10.14.0

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
isFunction	5101560.0 Ops/sec
typeof function	862327200.0 Ops/sec

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.core.js"></script>

Tests:

isFunction
const onClose = () => { console.log('hey') } const isfunc = _.isFunction(onClose);
typeof function
const onClose = () => { console.log('hey') } const isfunc = typeof onClose === 'function';