headless-nextjs.js

import styles from '../styles/Home.module.css'
import { useEffect } from 'react';

export default function Home() {

  useEffect(() => {
    return () => {
      if (typeof window !== 'undefined') {
        (function(t,u,e,m,i,l,io){
          t['TuemilioObject']=m;t[m]=t[m]||function(){(t[m].q=t[m].q||[]).push(arguments);};
          t[m].id='XXXXXXXXXXXXXXXXXXXXXXXX';l=u.createElement(e),io=u.getElementsByTagName(e)[0];
          l.id=m;l.src=i;l.async=1;io.parentNode.insertBefore(l,io);
        }(window,document,'script','Tuemilio','https://tuemilio.com/assets/js/modal/4.0/tuemilio-modal.js'));
        Tuemilio('init', {
          form: {
            disabled: true
          },
          dashboard: {
            disabled: true
          }
        });
        Tuemilio('sendVisit');

        Tuemilio('onDashboardData', function (dashboard){
          console.log(dashboard)
        });
      }
    }
  }, []);

  function submitForm() {
    Tuemilio('createSubscriber', {
      address: '[email protected]',
    });
  }

  return (
    <div className={styles.container}>
      <div>
        <button onClick={submitForm}>Send</button>
      </div>
    </div>
  )
}