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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36

Browser: Chrome 90

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
angular.isUndefined	1766116.4 Ops/sec
lodash.isUndefined	1697700.0 Ops/sec
Native js	1513780.9 Ops/sec
simplify native js	3417067.0 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