oliveskspaces/js/fix-annotation-spaces.js

(function () {
  // Guard against running multiple observers if the script is loaded more than once
  if (window.__miradorSpaceFixInitialized) return;
  window.__miradorSpaceFixInitialized = true;

  const observer = new MutationObserver((mutations) => {
    // Target any third-party HTML content blocks in Mirador that haven't been cleaned yet
    const elements = document.querySelectorAll(
      ".mirador-third-party-html:not([data-fixed])"
    );

    if (elements.length > 0) {
      elements.forEach((el) => {
        // Swap non-breaking spaces for normal breakable spaces
        el.innerHTML = el.innerHTML
          .replace(/ /g, " ")
          .replace(/\u00A0/g, " ");

        // Mark element so we don't re-process it on subsequent mutations
        el.setAttribute("data-fixed", "true");
      });
    }
  });

  // Start observing the document body for dynamically added Mirador elements
  observer.observe(document.body, {
    childList: true,
    subtree: true,
  });
})();