my changes

resources/assets/js/bootstrap.js

@@ -0,0 +1,27 @@
+/**
+ * We'll load the axios HTTP library which allows us to easily issue requests
+ * to our Laravel back-end. This library automatically handles sending the
+ * CSRF token as a header based on the value of the "XSRF" token cookie.
+ */
+try {
+    window.$ = window.jQuery = require('jquery');
+    // require('bootstrap-sass');
+} catch (e) {}
+
+window.axios = require('axios');
+window.axios.defaults.headers.common['X-Requested-With'] = 'XMLHttpRequest';
+
+/**
+ * Next we will register the CSRF Token as a common header with Axios so that
+ * all outgoing HTTP requests automatically have it attached. This is just
+ * a simple convenience so we don't have to attach every token manually.
+ */
+
+let token = document.head.querySelector('meta[name="csrf-token"]');
+
+if (token) {
+    window.axios.defaults.headers.common['X-CSRF-TOKEN'] = token.content;
+} 
+else {
+    console.error('CSRF token not found: https://laravel.com/docs/csrf#csrf-x-csrf-token');
+}

resources/assets/js/lib.js

@@ -0,0 +1,22 @@
+/**
+ * First we will load all of this project's JavaScript dependencies which
+ * includes Vue and other libraries. It is a great starting point when
+ * building robust, powerful web applications using Vue and Laravel.
+ */
+require('./bootstrap');
+window.Vue = require('vue');
+
+Vue.prototype.$http = axios;
+
+// Vue.component('example', require('./components/Example.vue'));
+
+// const app = new Vue({
+//     el: '#app',
+
+//     data: { 
+//         loading: false,    
+//         downloading: false,    
+//         items: [],
+//         message: "Just a test",
+//     }
+// });