JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js"></script>
    
<script>
   var myApp = angular.module('myApp', []);
    
    myApp.directive('shouldAppear', function () {
        return {
            template: "Should appear",
            link: function(){
                alert('should run');
            }
        };
    });
</script>

<body ng-app="myApp">
    <div ng-if="false" should-appear></div>    
</body>