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

Run details:

User agent: Mozilla/5.0 (X11; Fedora; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36

Browser: Chrome 76

Operating system: Fedora

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
angular.isUndefined	2627819.2 Ops/sec
lodash.isUndefined	2809068.8 Ops/sec
Native js	2837827.0 Ops/sec
simplify native js	5685333.5 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