background.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Background</title>
  </head>

  <body>
    <h1>Background</h1>
    
    <script>
      const { ipcRenderer } = require('electron');
      const { log } = require('./poc');

      let counter = 0;

      ipcRenderer.on('poc/increment', () => {
        counter++;
        log(`background received poc/increment, counter now ${counter}`);
        ipcRenderer.send('poc/update-counter', counter);
      });

      ipcRenderer.on('poc/get-counter', () => {
        log('background received poc/get-counter');
        ipcRenderer.send('poc/update-counter', counter);
      });
    </script>
  </body>
</html>