How to require npm packages after installing it in Laravel?

Question

For example，I need package sweetalert2,installing it first：

npm install --save sweetalert2

Now,do I need to require it in \resources\assets\js\bootstrap.js file in laravel?

It's default content is like this:

window._ = require('lodash');

try {
    window.$ = window.jQuery = require('jquery');

    require('bootstrap');
} catch (e) {}


window.axios = require('axios');

window.axios.defaults.headers.common['X-CSRF-TOKEN'] = window.Laravel.csrfToken;
window.axios.defaults.headers.common['X-Requested-With'] = 'XMLHttpRequest';

It looks like lodash,jquery,bootstrap,axios have been required into laravel,but the 4 sentences are different,they are like this:

window._ = require('lodash');
window.$ = window.jQuery = require('jquery');
require('bootstrap');
window.axios = require('axios');

Questions：

1、why do the 4 sentences have differences?

2、I want to require package sweetalert2，how do I write it?

How to require npm packages after installing it in Laravel?

1 Answers