require is not defined in a new js file

I want to use anime.js.
For install this library i need to do this:

  • $ npm install animejs –save
  • const anime = require(‘animejs’);

I want to writte the code in a js file named "anime.js"

This is "anime.js"

const anime = require('animejs');

    targets: '.animeTest',
    translateX: 250,
    rotate: '1turn',
    backgroundColor: '#FFF',
    duration: 800

and this is app.js

const express = require('express')
const app = express()

//EJS Layouts
const  expressLayouts = require('express-ejs-layouts')

app.set('view engine', 'ejs')


app.get('/', (req, res)=>{

    console.log('Servidor iniciado. Puerto: 3000')

The problem is that when i run the program it tells me

Uncaught ReferenceError: require is not defined
    at anime.js:1:15

>Solution :

When I used animejs as a library for a group project, we just included it in the index.html before any other scripts we were trying to run.

Here is the script. Just make sure to include it either in the head with all the meta tags, or somewhere in the body before any of the other scripts you are trying to run.

<script src="" integrity="sha512-z4OUqw38qNLpn1libAN9BsoDx6nbNFio5lA6CuTp9NlK83b89hgyCVq+N5FdBJptINztxn1Z3SaKSKUS5UP60Q==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>

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