Naimikan/angular-mapboxgl-directive

angular.module('mapboxgl-directive').directive('glClasses', [function () {
    function mapboxGlClassesDirectiveLink (scope, element, attrs, controller) {
        if (!controller) {
            throw new Error('Invalid angular-mapboxgl-directive controller');
        }

        var mapboxglScope = controller.getMapboxGlScope();

        controller.getMap().then(function (map) {
            mapboxglScope.$watch('glClasses', function (classesObject) {
        if (angular.isDefined(classesObject)) {
          map.setClasses(classesObject.classes, classesObject.options);
        } else {
          var currentClasses = map.getClasses();

          currentClasses.map(function (eachClass) {
            map.removeClass(eachClass);
          });
        }
            }, true);
        });
    }

    var directive = {
        restrict: 'A',
        scope: false,
        replace: false,
        require: '?^mapboxgl',
        link: mapboxGlClassesDirectiveLink
    };

    return directive;
}]);