i399exng1comp/app/switch.cmp.js

(function () {
    'use strict';

    var options = {
        templateUrl: 'app/switch.cmp.html',
        controller: Controller,
        bindings: {
            isOn: '<initial',
            onChange: '<'
        }
    };

    function Controller() {
        this.$onInit = $onInit;
        this.toggle = toggle;

        function $onInit() {
        }

        function toggle() {
            this.isOn = !this.isOn;
            this.onChange(this.isOn);
        }
    }

    angular.module('app').component('switch', options);

})();