main.js

import 'https://cdn.jsdelivr.net/npm/alpinejs@3.x.x/dist/cdn.min.js';
import * as from './app.js';

const app = new App({
 el: '#app',
 data: {
    message: '',
 },
 methods: {
    handleInput: function(event) {
      this.message = event.target.value;
    },
 },
 created: function() {
    this.message = 'Initialize your message...';
 },
});