gomoku/public/scripts/client-info.js

document.addEventListener('htmx:wsAfterMessage', function (e) {
  let msg;
  try {
    msg = JSON.parse(e.detail.message);
  } catch (_) {
    return;
  }
  if (msg.type !== 'client-info') {
    return;
  }
  console.log(`Message from server: ${msg.message}`);
});