app.ts

/**
 * First, we will load all of this project's Javascript utilities and other
 * dependencies. Then, we will be ready to develop a robust and powerful
 * application frontend using useful Laravel and JavaScript libraries.
 */

import "./bootstrap"

bootstrap.ts

/**
 * 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.
 */

import axios from "axios"

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: HTMLMetaElement | null = document.head.querySelector('meta[name="csrf-token"]');

if (token) {
    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');
}