why use babel code example

Example 1: babel

<!-- v6 <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script> -->
<script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
<!-- Your custom script here -->
<script type="text/babel">

Example 2: install babel language

$ sudo apt-cache search texlive french
 texlive-doc-fr - TeX Live: French documentation
 texlive-lang-french - TeX Live: French

$sudo apt-get install texlive-lang-french