How to serve a JavaScript build with Apache

<VirtualHost *:80>
        ServerName subdomain1.example.com
        ServerAlias subdomain2.example.com

        RewriteEngine on
        RewriteCond %{HTTPS} off
        RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
</VirtualHost>

<IfModule mod_ssl.c>
<VirtualHost *:443>
        ServerName subdomain1.example.com
        ServerAlias subdomain2.example.com

        DocumentRoot /var/vhosts/www/client
        <Directory />
                DirectoryIndex index.html
                Options Indexes FollowSymLinks
                AllowOverride All
                Require all granted
        </Directory>

        Include /etc/letsencrypt/options-ssl-apache.conf
        SSLCertificateFile /etc/letsencrypt/live/example.com/fullchain.pem
        SSLCertificateKeyFile /etc/letsencrypt/live/example.com/privkey.pem
</VirtualHost>
</IfModule>