I have written a directive by using typescript. The code is look like this.

'use strict';

module App.Directives {

    interface IPageModal extends ng.IDirective {
    }

    interface IPageModalScope extends ng.IScope {
        //modal: any;
    }

    class PageModal implements IPageModal {
        static directiveId: string = 'pageModal';
        restrict: string = "A";

        constructor(private $parse: IPageModalScope) {
        }

        link = (scope: IPageModalScope, element, attrs) => {

            element.on('click', function (event) {
                event.preventDefault();

                var options = {
                    backdrop: 'static',
                    keyboard: false
                };
                event.openModal = function () {
                    $('#' + attrs['targetModal']).modal(options);//error
                };
                event.showModal = function () {
                    $('#' + attrs['targetModal']).modal('show');//error
                };
                event.closeModal = function () {
                    $('#' + attrs['targetModal']).modal('hide');//error
                };
                var fn = this.$parse(attrs['pageModal']);
                fn(scope, { $event: event });
            });
        }
    }

    //References angular app
    app.directive(PageModal.directiveId, ['$parse', ($parse) => new PageModal($parse)]);
}

When I call jquery bootstrap .modal function then error occurring. How can i call this function below

$('#' + attrs['targetModal']).modal('hide'); //error line of code