Run results for: angular.isUndefined vs lodash isUndefined vs typeof === undefined fixed

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:69.0) Gecko/20100101 Firefox/69.0

Browser: Firefox 69

Operating system: Mac OS X 10.13

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
angular.isUndefined	92811920.0 Ops/sec
lodash.isUndefined	59665040.0 Ops/sec
Native js	99080820.0 Ops/sec
simplify native js	169159200.0 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.5.2/angular.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.6.1/lodash.min.js"></script>

Script Preparation code:

var foo;

Tests:

angular.isUndefined
if (angular.isUndefined(foo)) { foo; }
lodash.isUndefined
if (_.isUndefined(foo)) { foo; }
Native js
if (foo === undefined) { foo; }
simplify native js
if (!foo) { foo; }

Run results for: angular.isUndefined vs lodash isUndefined vs typeof === undefined fixed

angular.isUndefined

lodash.isUndefined

Native js

simplify native js